diff --git a/Octokit.Tests.Integration/Reactive/ObservableOrganizationMembersClientTests.cs b/Octokit.Tests.Integration/Reactive/ObservableOrganizationMembersClientTests.cs
index 6095584ba3..aed9bcf5b7 100644
--- a/Octokit.Tests.Integration/Reactive/ObservableOrganizationMembersClientTests.cs
+++ b/Octokit.Tests.Integration/Reactive/ObservableOrganizationMembersClientTests.cs
@@ -1,7 +1,9 @@
-using System.Reactive.Linq;
+using System;
+using System.Reactive.Linq;
 using System.Reactive.Threading.Tasks;
 using System.Threading.Tasks;
 using Octokit.Reactive;
+using Octokit.Tests.Helpers;
 using Octokit.Tests.Integration.Helpers;
 using Xunit;
 
@@ -62,6 +64,97 @@ public async Task ReturnsUsersPendingAdminOrganizationMembership()
                 await _client.RemoveOrganizationMembership(Helper.Organization, "alfhenrik-test-2");
             }
         }
+        
+        public class TheCreateOrganizationInvitationMethod
+        {
+            readonly IGitHubClient _gitHub;
+            readonly ObservableOrganizationMembersClient _client;
+
+            public TheCreateOrganizationInvitationMethod()
+            {
+                _gitHub = Helper.GetAuthenticatedClient();
+                _client = new ObservableOrganizationMembersClient(_gitHub);
+            }
+
+            [OrganizationTest]
+            public async Task ReturnsOrganizationMembershipInvitationViaUserId()
+            {
+                var user = await _gitHub.User.Get("alfhenrik-test-2");
+                
+                var organizationInvitationRequest = new OrganizationInvitationRequest(user.Id);
+                var organizationMembershipInvitation = await _client.CreateOrganizationInvitation(Helper.Organization, organizationInvitationRequest);
+                
+                Assert.Equal("alfhenrik-test-2", organizationMembershipInvitation.Login);
+                Assert.Equal(OrganizationMembershipRole.DirectMember, organizationMembershipInvitation.Role.Value);
+                Assert.Equal(Helper.UserName, organizationMembershipInvitation.Inviter.Login);
+                
+                await _client.RemoveOrganizationMembership(Helper.Organization, "alfhenrik-test-2");
+            }
+            
+            [OrganizationTest]
+            public async Task ReturnsOrganizationMembershipInvitationViaUserEmail()
+            {
+                var email = RandomEmailGenerator.GenerateRandomEmail();
+                
+                var organizationInvitationRequest = new OrganizationInvitationRequest(email);
+                var organizationMembershipInvitation = await _client.CreateOrganizationInvitation(Helper.Organization, organizationInvitationRequest);
+                
+                Assert.Equal(email, organizationMembershipInvitation.Email);
+                Assert.Equal(OrganizationMembershipRole.DirectMember, organizationMembershipInvitation.Role.Value);
+                Assert.Equal(Helper.UserName, organizationMembershipInvitation.Inviter.Login);
+
+                await _client.CancelOrganizationInvitation(Helper.Organization, organizationMembershipInvitation.Id);
+            }
+
+            [OrganizationTest]
+            public async Task ThrowsApiValidationExceptionForCurrentOrganizationMembers()
+            {
+                var user = await _gitHub.User.Get(Helper.UserName);
+                var organizationInvitationRequest = new OrganizationInvitationRequest(user.Id);
+                
+                await Assert.ThrowsAsync<ApiValidationException>(() => _client.CreateOrganizationInvitation(Helper.Organization, organizationInvitationRequest).ToTask());
+            }
+
+            [OrganizationTest]
+            public async Task ReturnsOrganizationMembershipInvitationSingleTeam()
+            {
+                var user = await _gitHub.User.Get("alfhenrik-test-2");
+
+                var team1 = await _gitHub.Organization.Team.Create(Helper.Organization, new NewTeam("TestTeam1"));
+                
+                var organizationInvitationRequest = new OrganizationInvitationRequest(user.Id, new int[] {team1.Id});
+                var organizationMembershipInvitation = await _client.CreateOrganizationInvitation(Helper.Organization, organizationInvitationRequest);
+                
+                Assert.Equal("alfhenrik-test-2", organizationMembershipInvitation.Login);
+                Assert.Equal(OrganizationMembershipRole.DirectMember, organizationMembershipInvitation.Role.Value);
+                Assert.Equal(Helper.UserName, organizationMembershipInvitation.Inviter.Login);
+                Assert.Equal(1, organizationMembershipInvitation.TeamCount);
+                
+                await _gitHub.Organization.Team.Delete(Helper.Organization, team1.Slug);
+                await _client.RemoveOrganizationMembership(Helper.Organization, "alfhenrik-test-2");
+            }
+            
+            [OrganizationTest]
+            public async Task ReturnsOrganizationMembershipInvitationMultipleTeams()
+            {
+                var user = await _gitHub.User.Get("alfhenrik-test-2");
+
+                var team1 = await _gitHub.Organization.Team.Create(Helper.Organization, new NewTeam("TestTeam1"));
+                var team2 = await _gitHub.Organization.Team.Create(Helper.Organization, new NewTeam("TestTeam2"));
+                
+                var organizationInvitationRequest = new OrganizationInvitationRequest(user.Id, new int[] {team1.Id, team2.Id});
+                var organizationMembershipInvitation = await _client.CreateOrganizationInvitation(Helper.Organization, organizationInvitationRequest);
+                
+                Assert.Equal("alfhenrik-test-2", organizationMembershipInvitation.Login);
+                Assert.Equal(OrganizationMembershipRole.DirectMember, organizationMembershipInvitation.Role.Value);
+                Assert.Equal(Helper.UserName, organizationMembershipInvitation.Inviter.Login);
+                Assert.Equal(2, organizationMembershipInvitation.TeamCount);
+                
+                await _gitHub.Organization.Team.Delete(Helper.Organization, team1.Slug);
+                await _gitHub.Organization.Team.Delete(Helper.Organization, team2.Slug);
+                await _client.RemoveOrganizationMembership(Helper.Organization, "alfhenrik-test-2");
+            }
+        }
 
         public class TheRemoveOrganizationMembershipMethod
         {
diff --git a/Octokit.Tests/Reactive/ObservableOrganizationMembersClientTests.cs b/Octokit.Tests/Reactive/ObservableOrganizationMembersClientTests.cs
index 6e3e44b435..1a03d209d1 100644
--- a/Octokit.Tests/Reactive/ObservableOrganizationMembersClientTests.cs
+++ b/Octokit.Tests/Reactive/ObservableOrganizationMembersClientTests.cs
@@ -361,6 +361,33 @@ public async Task EnsuresNonNullArguments()
                 await Assert.ThrowsAsync<ArgumentNullException>(() => client.AddOrUpdateOrganizationMembership("org", "username", null).ToTask());
             }
         }
+        
+        public class TheCreateOrganizationInvitationMethod
+        {
+            [Fact]
+            public void CreateOrganizationInvitationFromClientOrganizationMember()
+            {
+                var gitHubClient = Substitute.For<IGitHubClient>();
+                var client = new ObservableOrganizationMembersClient(gitHubClient);
+
+                var organizationInvitationRequest = new OrganizationInvitationRequest(1);
+                client.CreateOrganizationInvitation("org", organizationInvitationRequest);
+
+                gitHubClient.Organization.Member.Received().CreateOrganizationInvitation("org", organizationInvitationRequest);
+            }
+
+            [Fact]
+            public async Task EnsureNonNullArguments()
+            {
+                var client = new ObservableOrganizationMembersClient(Substitute.For<IGitHubClient>());
+                
+                var organizationInvitationRequest = new OrganizationInvitationRequest(1);
+                
+                await Assert.ThrowsAsync<ArgumentNullException>(() => client.CreateOrganizationInvitation(null, organizationInvitationRequest).ToTask());
+                await Assert.ThrowsAsync<ArgumentException>(() => client.CreateOrganizationInvitation("", organizationInvitationRequest).ToTask());
+                await Assert.ThrowsAsync<ArgumentNullException>(() => client.CreateOrganizationInvitation("org", null).ToTask());
+            }
+        }
 
         public class TheDeleteOrganizationMembershipMethod
         {