diff --git a/github/repos_merging.go b/github/repos_merging.go
new file mode 100644
index 0000000..31f8313
--- /dev/null
+++ b/github/repos_merging.go
@@ -0,0 +1,37 @@
+// Copyright 2014 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"fmt"
+)
+
+// RepositoryMergeRequest represents a request to merge a branch in a
+// repository.
+type RepositoryMergeRequest struct {
+	Base          *string `json:"base,omitempty"`
+	Head          *string `json:"head,omitempty"`
+	CommitMessage *string `json:"commit_message,omitempty"`
+}
+
+// Merge a branch in the specified repository.
+//
+// GitHub API docs: https://developer.github.com/v3/repos/merging/#perform-a-merge
+func (s *RepositoriesService) Merge(owner, repo string, request *RepositoryMergeRequest) (*RepositoryCommit, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/merges", owner, repo)
+	req, err := s.client.NewRequest("POST", u, request)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	commit := new(RepositoryCommit)
+	resp, err := s.client.Do(req, commit)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return commit, resp, err
+}
diff --git a/github/repos_merging_test.go b/github/repos_merging_test.go
new file mode 100644
index 0000000..166c5e5
--- /dev/null
+++ b/github/repos_merging_test.go
@@ -0,0 +1,47 @@
+// Copyright 2014 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"reflect"
+	"testing"
+)
+
+func TestRepositoriesService_Merge(t *testing.T) {
+	setup()
+	defer teardown()
+
+	input := &RepositoryMergeRequest{
+		Base:          String("b"),
+		Head:          String("h"),
+		CommitMessage: String("c"),
+	}
+
+	mux.HandleFunc("/repos/o/r/merges", func(w http.ResponseWriter, r *http.Request) {
+		v := new(RepositoryMergeRequest)
+		json.NewDecoder(r.Body).Decode(v)
+
+		testMethod(t, r, "POST")
+		if !reflect.DeepEqual(v, input) {
+			t.Errorf("Request body = %+v, want %+v", v, input)
+		}
+
+		fmt.Fprint(w, `{"sha":"s"}`)
+	})
+
+	commit, _, err := client.Repositories.Merge("o", "r", input)
+	if err != nil {
+		t.Errorf("Repositories.Merge returned error: %v", err)
+	}
+
+	want := &RepositoryCommit{SHA: String("s")}
+	if !reflect.DeepEqual(commit, want) {
+		t.Errorf("Repositories.Merge returned %+v, want %+v", commit, want)
+	}
+}