diff --git a/Octokit.Reactive/Clients/IObservablePullRequestReviewCommentReactionsClient.cs b/Octokit.Reactive/Clients/IObservablePullRequestReviewCommentReactionsClient.cs
new file mode 100644
index 00000000..75cc0a88
--- /dev/null
+++ b/Octokit.Reactive/Clients/IObservablePullRequestReviewCommentReactionsClient.cs
@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+
+namespace Octokit.Reactive
+{
+    public interface IObservablePullRequestReviewCommentReactionsClient
+    {
+        /// <summary>
+        /// Creates a reaction for a specified Pull Request Review Comment.
+        /// </summary>
+        /// <remarks>https://developer.github.com/v3/reactions/#create-reaction-for-a-pull-request-review-comment</remarks>
+        /// <param name="owner">The owner of the repository</param>
+        /// <param name="name">The name of the repository</param>
+        /// <param name="number">The comment id</param>
+        /// <param name="reaction">The reaction to create</param>
+        /// <returns></returns>
+        IObservable<Reaction> Create(string owner, string name, int number, NewReaction reaction);
+
+        /// <summary>
+        /// Get all reactions for a specified Pull Request Review Comment.
+        /// </summary>
+        /// <remarks>https://developer.github.com/v3/reactions/#list-reactions-for-a-pull-request-review-comment</remarks>
+        /// <param name="owner">The owner of the repository</param>
+        /// <param name="name">The name of the repository</param>
+        /// <param name="number">The comment id</param>        
+        /// <returns></returns>
+        IObservable<Reaction> GetAll(string owner, string name, int number);
+    }
+}
diff --git a/Octokit.Reactive/Clients/IObservableReactionsClient.cs b/Octokit.Reactive/Clients/IObservableReactionsClient.cs
index c6ce8111..534ed3db 100644
--- a/Octokit.Reactive/Clients/IObservableReactionsClient.cs
+++ b/Octokit.Reactive/Clients/IObservableReactionsClient.cs
@@ -7,5 +7,7 @@
         IObservableIssueReactionsClient Issue { get; }
 
         IObservableIssueCommentReactionsClient IssueComment { get; }
+
+        IObservablePullRequestReviewCommentReactionsClient PullRequestReviewComment { get; }
     }
 }
diff --git a/Octokit.Reactive/Clients/ObservableIssueCommentReactionsClient.cs b/Octokit.Reactive/Clients/ObservableIssueCommentReactionsClient.cs
index c218a12c..a7c64ecf 100644
--- a/Octokit.Reactive/Clients/ObservableIssueCommentReactionsClient.cs
+++ b/Octokit.Reactive/Clients/ObservableIssueCommentReactionsClient.cs
@@ -1,19 +1,20 @@
 using Octokit.Reactive.Internal;
 using System;
+using System.Reactive.Linq;
 using System.Reactive.Threading.Tasks;
 
 namespace Octokit.Reactive
 {
     public class ObservableIssueCommentReactionsClient : IObservableIssueCommentReactionsClient
     {
-        readonly ICommitCommentReactionsClient _client;
+        readonly IIssueCommentReactionsClient _client;
         readonly IConnection _connection;
 
         public ObservableIssueCommentReactionsClient(IGitHubClient client)
         {
             Ensure.ArgumentNotNull(client, "client");
 
-            _client = client.Reaction.CommitComment;
+            _client = client.Reaction.IssueComment;
             _connection = client.Connection;
         }
 
diff --git a/Octokit.Reactive/Clients/ObservablePullRequestReviewCommentReactionsClient.cs b/Octokit.Reactive/Clients/ObservablePullRequestReviewCommentReactionsClient.cs
new file mode 100644
index 00000000..331b721d
--- /dev/null
+++ b/Octokit.Reactive/Clients/ObservablePullRequestReviewCommentReactionsClient.cs
@@ -0,0 +1,55 @@
+using Octokit.Reactive.Internal;
+using System;
+using System.Collections.Generic;
+using System.Reactive.Threading.Tasks;
+
+namespace Octokit.Reactive
+{
+    class ObservablePullRequestReviewCommentReactionsClient : IObservablePullRequestReviewCommentReactionsClient
+    {
+        readonly IPullRequestReviewCommentReactionsClient _client;
+        readonly IConnection _connection;
+
+        public ObservablePullRequestReviewCommentReactionsClient(IGitHubClient client)
+        {
+            Ensure.ArgumentNotNull(client, "client");
+
+            _client = client.Reaction.PullRequestReviewComment;
+            _connection = client.Connection;
+        }
+
+        /// <summary>
+        /// Creates a reaction for a specified Pull Request Review Comment.
+        /// </summary>
+        /// <remarks>https://developer.github.com/v3/reactions/#create-reaction-for-a-pull-request-review-comment</remarks>
+        /// <param name="owner">The owner of the repository</param>
+        /// <param name="name">The name of the repository</param>
+        /// <param name="number">The comment id</param>
+        /// <param name="reaction">The reaction to create</param>
+        /// <returns></returns>
+        public IObservable<Reaction> Create(string owner, string name, int number, NewReaction reaction)
+        {
+            Ensure.ArgumentNotNullOrEmptyString(owner, "owner");
+            Ensure.ArgumentNotNullOrEmptyString(name, "name");
+            Ensure.ArgumentNotNull(reaction, "reaction");
+
+            return _client.Create(owner, name, number, reaction).ToObservable();
+        }
+
+        /// <summary>
+        /// Get all reactions for a specified Pull Request Review Comment.
+        /// </summary>
+        /// <remarks>https://developer.github.com/v3/reactions/#list-reactions-for-a-pull-request-review-comment</remarks>
+        /// <param name="owner">The owner of the repository</param>
+        /// <param name="name">The name of the repository</param>
+        /// <param name="number">The comment id</param>        
+        /// <returns></returns>
+        public IObservable<Reaction> GetAll(string owner, string name, int number)
+        {
+            Ensure.ArgumentNotNullOrEmptyString(owner, "owner");
+            Ensure.ArgumentNotNullOrEmptyString(name, "name");
+
+            return _connection.GetAndFlattenAllPages<Reaction>(ApiUrls.PullRequestReviewCommentReaction(owner, name, number), null, AcceptHeaders.ReactionsPreview);
+        }
+    }
+}
diff --git a/Octokit.Reactive/Clients/ObservableReactionsClient.cs b/Octokit.Reactive/Clients/ObservableReactionsClient.cs
index dfb34007..d8fe56bf 100644
--- a/Octokit.Reactive/Clients/ObservableReactionsClient.cs
+++ b/Octokit.Reactive/Clients/ObservableReactionsClient.cs
@@ -1,6 +1,4 @@
-using System;
-
-namespace Octokit.Reactive
+namespace Octokit.Reactive
 {
     public class ObservableReactionsClient : IObservableReactionsClient
     {
@@ -11,6 +9,7 @@ namespace Octokit.Reactive
             CommitComment = new ObservableCommitCommentReactionsClient(client);
             Issue = new ObservableIssueReactionsClient(client);
             IssueComment = new ObservableIssueCommentReactionsClient(client);
+            PullRequestReviewComment = new ObservablePullRequestReviewCommentReactionsClient(client);
         }
 
         public IObservableCommitCommentReactionsClient CommitComment { get; private set; }
@@ -18,5 +17,7 @@ namespace Octokit.Reactive
         public IObservableIssueReactionsClient Issue { get; private set; }
 
         public IObservableIssueCommentReactionsClient IssueComment { get; private set; }
+
+        public IObservablePullRequestReviewCommentReactionsClient PullRequestReviewComment { get; private set; }
     }
 }
diff --git a/Octokit.Reactive/Octokit.Reactive-Mono.csproj b/Octokit.Reactive/Octokit.Reactive-Mono.csproj
index 8996d64c..d0376939 100644
--- a/Octokit.Reactive/Octokit.Reactive-Mono.csproj
+++ b/Octokit.Reactive/Octokit.Reactive-Mono.csproj
@@ -196,6 +196,8 @@
     <Compile Include="Clients\ObservableIssueReactionsClient.cs" />
     <Compile Include="Clients\IObservableIssueCommentReactionsClient.cs" />
     <Compile Include="Clients\ObservableIssueCommentReactionsClient.cs" />
+    <Compile Include="Clients\IObservablePullRequestReviewCommentReactionsClient.cs" />
+    <Compile Include="Clients\ObservablePullRequestReviewCommentReactionsClient.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup>
diff --git a/Octokit.Reactive/Octokit.Reactive-MonoAndroid.csproj b/Octokit.Reactive/Octokit.Reactive-MonoAndroid.csproj
index 38d89c8f..57562b4c 100644
--- a/Octokit.Reactive/Octokit.Reactive-MonoAndroid.csproj
+++ b/Octokit.Reactive/Octokit.Reactive-MonoAndroid.csproj
@@ -204,6 +204,8 @@
     <Compile Include="Clients\ObservableIssueReactionsClient.cs" />
     <Compile Include="Clients\IObservableIssueCommentReactionsClient.cs" />
     <Compile Include="Clients\ObservableIssueCommentReactionsClient.cs" />
+    <Compile Include="Clients\IObservablePullRequestReviewCommentReactionsClient.cs" />
+    <Compile Include="Clients\ObservablePullRequestReviewCommentReactionsClient.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath)\Novell\Novell.MonoDroid.CSharp.targets" />
   <ItemGroup>
diff --git a/Octokit.Reactive/Octokit.Reactive-Monotouch.csproj b/Octokit.Reactive/Octokit.Reactive-Monotouch.csproj
index bb68d1f0..72227946 100644
--- a/Octokit.Reactive/Octokit.Reactive-Monotouch.csproj
+++ b/Octokit.Reactive/Octokit.Reactive-Monotouch.csproj
@@ -200,6 +200,8 @@
     <Compile Include="Clients\ObservableIssueReactionsClient.cs" />
     <Compile Include="Clients\IObservableIssueCommentReactionsClient.cs" />
     <Compile Include="Clients\ObservableIssueCommentReactionsClient.cs" />
+    <Compile Include="Clients\IObservablePullRequestReviewCommentReactionsClient.cs" />
+    <Compile Include="Clients\ObservablePullRequestReviewCommentReactionsClient.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup>
diff --git a/Octokit.Reactive/Octokit.Reactive.csproj b/Octokit.Reactive/Octokit.Reactive.csproj
index a63f8014..d7614575 100644
--- a/Octokit.Reactive/Octokit.Reactive.csproj
+++ b/Octokit.Reactive/Octokit.Reactive.csproj
@@ -97,6 +97,7 @@
     <Compile Include="Clients\IObservableMergingClient.cs" />
     <Compile Include="Clients\IObservableMigrationClient.cs" />
     <Compile Include="Clients\IObservableOauthClient.cs" />
+    <Compile Include="Clients\IObservablePullRequestReviewCommentReactionsClient.cs" />
     <Compile Include="Clients\IObservableRepositoryCommitsClients.cs" />
     <Compile Include="Clients\IObservableRepositoryDeployKeysClient.cs" />
     <Compile Include="Clients\IObservableRepositoryPagesClient.cs" />
@@ -109,6 +110,7 @@
     <Compile Include="Clients\ObservableMigrationsClient.cs" />
     <Compile Include="Clients\ObservableMergingClient.cs" />
     <Compile Include="Clients\ObservableMigrationClient.cs" />
+    <Compile Include="Clients\ObservablePullRequestReviewCommentReactionsClient.cs" />
     <Compile Include="Clients\ObservableReactionsClient.cs" />
     <Compile Include="Clients\ObservableRepositoryDeployKeysClient.cs" />
     <Compile Include="Clients\ObservableOauthClient.cs" />
diff --git a/Octokit/Clients/IPullRequestReviewCommentReactionsClient.cs b/Octokit/Clients/IPullRequestReviewCommentReactionsClient.cs
new file mode 100644
index 00000000..5c2c4dba
--- /dev/null
+++ b/Octokit/Clients/IPullRequestReviewCommentReactionsClient.cs
@@ -0,0 +1,29 @@
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace Octokit
+{
+    public interface IPullRequestReviewCommentReactionsClient
+    {
+        /// <summary>
+        /// Creates a reaction for a specified Pull Request Review Comment.
+        /// </summary>
+        /// <remarks>https://developer.github.com/v3/reactions/#create-reaction-for-a-pull-request-review-comment</remarks>
+        /// <param name="owner">The owner of the repository</param>
+        /// <param name="name">The name of the repository</param>
+        /// <param name="number">The comment id</param>
+        /// <param name="reaction">The reaction to create</param>
+        /// <returns></returns>
+        Task<Reaction> Create(string owner, string name, int number, NewReaction reaction);
+
+        /// <summary>
+        /// Get all reactions for a specified Pull Request Review Comment.
+        /// </summary>
+        /// <remarks>https://developer.github.com/v3/reactions/#list-reactions-for-a-pull-request-review-comment</remarks>
+        /// <param name="owner">The owner of the repository</param>
+        /// <param name="name">The name of the repository</param>
+        /// <param name="number">The comment id</param>        
+        /// <returns></returns>
+        Task<IReadOnlyList<Reaction>> GetAll(string owner, string name, int number);
+    }
+}
diff --git a/Octokit/Clients/IReactionsClient.cs b/Octokit/Clients/IReactionsClient.cs
index d22b83e1..08f14c44 100644
--- a/Octokit/Clients/IReactionsClient.cs
+++ b/Octokit/Clients/IReactionsClient.cs
@@ -31,5 +31,13 @@
         /// Refer to the API documentation for more information: https://developer.github.com/v3/reactions/
         /// </remarks>
         IIssueCommentReactionsClient IssueComment { get; }
+
+        /// <summary>
+        /// Access GitHub's Reactions API for Issue Comments.
+        /// </summary>
+        /// <remarks>
+        /// Refer to the API documentation for more information: https://developer.github.com/v3/reactions/
+        /// </remarks>
+        IPullRequestReviewCommentReactionsClient PullRequestReviewComment { get; }
     }
 }
diff --git a/Octokit/Clients/PullRequestReviewCommentReactionsClient.cs b/Octokit/Clients/PullRequestReviewCommentReactionsClient.cs
new file mode 100644
index 00000000..4c07dffa
--- /dev/null
+++ b/Octokit/Clients/PullRequestReviewCommentReactionsClient.cs
@@ -0,0 +1,48 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace Octokit
+{
+    public class PullRequestReviewCommentReactionsClient : ApiClient, IPullRequestReviewCommentReactionsClient
+    {
+        public PullRequestReviewCommentReactionsClient(IApiConnection apiConnection)
+            : base(apiConnection)
+        {
+        }
+
+        /// <summary>
+        /// Creates a reaction for a specified Pull Request Review Comment.
+        /// </summary>
+        /// <remarks>https://developer.github.com/v3/reactions/#create-reaction-for-a-pull-request-review-comment</remarks>
+        /// <param name="owner">The owner of the repository</param>
+        /// <param name="name">The name of the repository</param>
+        /// <param name="number">The comment id</param>
+        /// <param name="reaction">The reaction to create</param>
+        /// <returns></returns>
+        public Task<Reaction> Create(string owner, string name, int number, NewReaction reaction)
+        {
+            Ensure.ArgumentNotNullOrEmptyString(owner, "owner");
+            Ensure.ArgumentNotNullOrEmptyString(name, "name");
+            Ensure.ArgumentNotNull(reaction, "reaction");
+
+            return ApiConnection.Post<Reaction>(ApiUrls.PullRequestReviewCommentReaction(owner, name, number), reaction, AcceptHeaders.ReactionsPreview);
+        }
+
+        /// <summary>
+        /// Get all reactions for a specified Pull Request Review Comment.
+        /// </summary>
+        /// <remarks>https://developer.github.com/v3/reactions/#list-reactions-for-a-pull-request-review-comment</remarks>
+        /// <param name="owner">The owner of the repository</param>
+        /// <param name="name">The name of the repository</param>
+        /// <param name="number">The comment id</param>        
+        /// <returns></returns>
+        public Task<IReadOnlyList<Reaction>> GetAll(string owner, string name, int number)
+        {
+            Ensure.ArgumentNotNullOrEmptyString(owner, "owner");
+            Ensure.ArgumentNotNullOrEmptyString(name, "name");
+
+            return ApiConnection.GetAll<Reaction>(ApiUrls.PullRequestReviewCommentReaction(owner, name, number), AcceptHeaders.ReactionsPreview);
+        }
+    }
+}
diff --git a/Octokit/Clients/ReactionsClient.cs b/Octokit/Clients/ReactionsClient.cs
index 53364212..9c1d110b 100644
--- a/Octokit/Clients/ReactionsClient.cs
+++ b/Octokit/Clients/ReactionsClient.cs
@@ -13,6 +13,8 @@ namespace Octokit
         {
             CommitComment = new CommitCommentReactionsClient(apiConnection);
             Issue = new IssueReactionsClient(apiConnection);
+            IssueComment = new IssueCommentReactionsClient(apiConnection);
+            PullRequestReviewComment = new PullRequestReviewCommentReactionsClient(apiConnection);
         }
 
         /// <summary>
@@ -38,5 +40,13 @@ namespace Octokit
         /// Refer to the API documentation for more information: https://developer.github.com/v3/reactions/
         /// </remarks>
         public IIssueCommentReactionsClient IssueComment { get; private set; }
+
+        /// <summary>
+        /// Access GitHub's Reactions API for Pull Request Review Comments.
+        /// </summary>
+        /// <remarks>
+        /// Refer to the API documentation for more information: https://developer.github.com/v3/reactions/
+        /// </remarks>
+        public IPullRequestReviewCommentReactionsClient PullRequestReviewComment { get; private set; }      
     }
 }
diff --git a/Octokit/Octokit-Mono.csproj b/Octokit/Octokit-Mono.csproj
index 5e46e53c..fc193944 100644
--- a/Octokit/Octokit-Mono.csproj
+++ b/Octokit/Octokit-Mono.csproj
@@ -476,6 +476,8 @@
     <Compile Include="Clients\IssueReactionsClient.cs" />
     <Compile Include="Clients\IIssueCommentReactionsClient.cs" />
     <Compile Include="Clients\IssueCommentReactionsClient.cs" />
+    <Compile Include="Clients\IPullRequestReviewCommentReactionsClient.cs" />
+    <Compile Include="Clients\PullRequestReviewCommentReactionsClient.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
 </Project>
\ No newline at end of file
diff --git a/Octokit/Octokit-MonoAndroid.csproj b/Octokit/Octokit-MonoAndroid.csproj
index d9d8efbe..33d012e3 100644
--- a/Octokit/Octokit-MonoAndroid.csproj
+++ b/Octokit/Octokit-MonoAndroid.csproj
@@ -487,6 +487,8 @@
     <Compile Include="Clients\IssueReactionsClient.cs" />
     <Compile Include="Clients\IIssueCommentReactionsClient.cs" />
     <Compile Include="Clients\IssueCommentReactionsClient.cs" />
+    <Compile Include="Clients\IPullRequestReviewCommentReactionsClient.cs" />
+    <Compile Include="Clients\PullRequestReviewCommentReactionsClient.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath)\Novell\Novell.MonoDroid.CSharp.targets" />
 </Project>
\ No newline at end of file
diff --git a/Octokit/Octokit-Monotouch.csproj b/Octokit/Octokit-Monotouch.csproj
index 3858e96f..5dd8eacf 100644
--- a/Octokit/Octokit-Monotouch.csproj
+++ b/Octokit/Octokit-Monotouch.csproj
@@ -483,6 +483,8 @@
     <Compile Include="Clients\IssueReactionsClient.cs" />
     <Compile Include="Clients\IIssueCommentReactionsClient.cs" />
     <Compile Include="Clients\IssueCommentReactionsClient.cs" />
+    <Compile Include="Clients\IPullRequestReviewCommentReactionsClient.cs" />
+    <Compile Include="Clients\PullRequestReviewCommentReactionsClient.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath)\Xamarin\iOS\Xamarin.MonoTouch.CSharp.targets" />
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
diff --git a/Octokit/Octokit-Portable.csproj b/Octokit/Octokit-Portable.csproj
index 1e93e924..3207c985 100644
--- a/Octokit/Octokit-Portable.csproj
+++ b/Octokit/Octokit-Portable.csproj
@@ -473,6 +473,8 @@
     <Compile Include="Clients\IssueReactionsClient.cs" />
     <Compile Include="Clients\IIssueCommentReactionsClient.cs" />
     <Compile Include="Clients\IssueCommentReactionsClient.cs" />
+    <Compile Include="Clients\IPullRequestReviewCommentReactionsClient.cs" />
+    <Compile Include="Clients\PullRequestReviewCommentReactionsClient.cs" />
   </ItemGroup>
   <ItemGroup>
     <CodeAnalysisDictionary Include="..\CustomDictionary.xml">
diff --git a/Octokit/Octokit-netcore45.csproj b/Octokit/Octokit-netcore45.csproj
index 43aa1886..d7c46cee 100644
--- a/Octokit/Octokit-netcore45.csproj
+++ b/Octokit/Octokit-netcore45.csproj
@@ -480,6 +480,8 @@
     <Compile Include="Models\Response\Reaction.cs" />
     <Compile Include="Clients\IIssueCommentReactionsClient.cs" />
     <Compile Include="Clients\IssueCommentReactionsClient.cs" />
+    <Compile Include="Clients\IPullRequestReviewCommentReactionsClient.cs" />
+    <Compile Include="Clients\PullRequestReviewCommentReactionsClient.cs" />
   </ItemGroup>
   <ItemGroup>
     <CodeAnalysisDictionary Include="..\CustomDictionary.xml">
diff --git a/Octokit/Octokit.csproj b/Octokit/Octokit.csproj
index 3d3ca2fb..53108b0c 100644
--- a/Octokit/Octokit.csproj
+++ b/Octokit/Octokit.csproj
@@ -61,6 +61,7 @@
     <Compile Include="Clients\ICommitCommentReactionsClient.cs" />
     <Compile Include="Clients\IIssueCommentReactionsClient.cs" />
     <Compile Include="Clients\IIssueReactionsClient.cs" />
+    <Compile Include="Clients\IPullRequestReviewCommentReactionsClient.cs" />
     <Compile Include="Clients\IssueCommentReactionsClient.cs" />
     <Compile Include="Clients\IssueReactionsClient.cs" />
     <Compile Include="Clients\MigrationsClient.cs" />
@@ -91,6 +92,7 @@
     <Compile Include="Clients\IRepositoryContentsClient.cs" />
     <Compile Include="Clients\OrganizationMembersClient.cs" />
     <Compile Include="Clients\CommitCommentReactionsClient.cs" />
+    <Compile Include="Clients\PullRequestReviewCommentReactionsClient.cs" />
     <Compile Include="Clients\ReactionsClient.cs" />
     <Compile Include="Clients\RepositoryCommentsClient.cs" />
     <Compile Include="Clients\IRepositoryCommentsClient.cs" />