diff --git a/github/actions_workflow_runs.go b/github/actions_workflow_runs.go
index 18fdd57d6a..9fd01c4a56 100644
--- a/github/actions_workflow_runs.go
+++ b/github/actions_workflow_runs.go
@@ -94,6 +94,14 @@ type WorkflowRunAttemptOptions struct {
 	ExcludePullRequests *bool `url:"exclude_pull_requests,omitempty"`
 }
 
+// PendingDeploymentsRequest specifies body parameters to PendingDeployments.
+type PendingDeploymentsRequest struct {
+	EnvironmentIDs []int64 `json:"environment_ids"`
+	// State can be one of: "approved", "rejected".
+	State   string `json:"state"`
+	Comment string `json:"comment"`
+}
+
 func (s *ActionsService) listWorkflowRuns(ctx context.Context, endpoint string, opts *ListWorkflowRunsOptions) (*WorkflowRuns, *Response, error) {
 	u, err := addOptions(endpoint, opts)
 	if err != nil {
@@ -321,3 +329,23 @@ func (s *ActionsService) GetWorkflowRunUsageByID(ctx context.Context, owner, rep
 
 	return workflowRunUsage, resp, nil
 }
+
+// PendingDeployments approve or reject pending deployments that are waiting on approval by a required reviewer.
+//
+// GitHub API docs: https://docs.github.com/en/rest/actions/workflow-runs#review-pending-deployments-for-a-workflow-run
+func (s *ActionsService) PendingDeployments(ctx context.Context, owner, repo string, runID int64, request *PendingDeploymentsRequest) ([]*Deployment, *Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/actions/runs/%v/pending_deployments", owner, repo, runID)
+
+	req, err := s.client.NewRequest("POST", u, request)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var deployments []*Deployment
+	resp, err := s.client.Do(ctx, req, &deployments)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return deployments, resp, nil
+}
diff --git a/github/actions_workflow_runs_test.go b/github/actions_workflow_runs_test.go
index d22b8a52e8..2705363ba6 100644
--- a/github/actions_workflow_runs_test.go
+++ b/github/actions_workflow_runs_test.go
@@ -7,6 +7,7 @@ package github
 
 import (
 	"context"
+	"encoding/json"
 	"fmt"
 	"net/http"
 	"net/url"
@@ -1075,3 +1076,47 @@ func TestWorkflowRunUsage_Marshal(t *testing.T) {
 
 	testJSONMarshal(t, u, want)
 }
+
+func TestActionService_PendingDeployments(t *testing.T) {
+	client, mux, _, teardown := setup()
+	defer teardown()
+
+	input := &PendingDeploymentsRequest{EnvironmentIDs: []int64{3, 4}, State: "approved", Comment: ""}
+
+	mux.HandleFunc("/repos/o/r/actions/runs/399444496/pending_deployments", func(w http.ResponseWriter, r *http.Request) {
+		v := new(PendingDeploymentsRequest)
+		json.NewDecoder(r.Body).Decode(v)
+
+		testMethod(t, r, "POST")
+		if !cmp.Equal(v, input) {
+			t.Errorf("Request body = %+v, want %+v", v, input)
+		}
+
+		fmt.Fprint(w, `[{"id":1}, {"id":2}]`)
+	})
+
+	ctx := context.Background()
+	deployments, _, err := client.Actions.PendingDeployments(ctx, "o", "r", 399444496, input)
+	if err != nil {
+		t.Errorf("Actions.PendingDeployments returned error: %v", err)
+	}
+
+	want := []*Deployment{{ID: Int64(1)}, {ID: Int64(2)}}
+	if !cmp.Equal(deployments, want) {
+		t.Errorf("Actions.PendingDeployments returned %+v, want %+v", deployments, want)
+	}
+
+	const methodName = "PendingDeployments"
+	testBadOptions(t, methodName, func() (err error) {
+		_, _, err = client.Actions.PendingDeployments(ctx, "\n", "\n", 399444496, input)
+		return err
+	})
+
+	testNewRequestAndDoFailure(t, methodName, client, func() (*Response, error) {
+		got, resp, err := client.Actions.PendingDeployments(ctx, "o", "r", 399444496, input)
+		if got != nil {
+			t.Errorf("testNewRequestAndDoFailure %v = %#v, want nil", methodName, got)
+		}
+		return resp, err
+	})
+}