diff --git a/changelogs/unreleased/4740-phuongatemc b/changelogs/unreleased/4740-phuongatemc
new file mode 100644
index 000000000..0227a9665
--- /dev/null
+++ b/changelogs/unreleased/4740-phuongatemc
@@ -0,0 +1,2 @@
+Add PriorityClass to the AdditionalItems of Backup's PodAction and Restore's PodAction plugin to
+backup and restore PriorityClass if it is used by a Pod.
diff --git a/pkg/backup/pod_action.go b/pkg/backup/pod_action.go
index be43c24ed..d0e834fbb 100644
--- a/pkg/backup/pod_action.go
+++ b/pkg/backup/pod_action.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2017 the Velero contributors.
+Copyright the Velero contributors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -56,12 +56,20 @@ func (a *PodAction) Execute(item runtime.Unstructured, backup *v1.Backup) (runti
 		return nil, nil, errors.WithStack(err)
 	}
 
-	if len(pod.Spec.Volumes) == 0 {
-		a.log.Info("pod has no volumes")
-		return item, nil, nil
+	var additionalItems []velero.ResourceIdentifier
+	if pod.Spec.PriorityClassName != "" {
+		a.log.Infof("Adding priorityclass %s to additionalItems", pod.Spec.PriorityClassName)
+		additionalItems = append(additionalItems, velero.ResourceIdentifier{
+			GroupResource: kuberesource.PriorityClasses,
+			Name:          pod.Spec.PriorityClassName,
+		})
+	}
+
+	if len(pod.Spec.Volumes) == 0 {
+		a.log.Info("pod has no volumes")
+		return item, additionalItems, nil
 	}
 
-	var additionalItems []velero.ResourceIdentifier
 	for _, volume := range pod.Spec.Volumes {
 		if volume.PersistentVolumeClaim != nil && volume.PersistentVolumeClaim.ClaimName != "" {
 			a.log.Infof("Adding pvc %s to additionalItems", volume.PersistentVolumeClaim.ClaimName)
diff --git a/pkg/backup/pod_action_test.go b/pkg/backup/pod_action_test.go
index c1a7f0e0a..1618b3089 100644
--- a/pkg/backup/pod_action_test.go
+++ b/pkg/backup/pod_action_test.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2018 the Velero contributors.
+Copyright the Velero contributors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -115,6 +115,25 @@ func TestPodActionExecute(t *testing.T) {
 				{GroupResource: kuberesource.PersistentVolumeClaims, Namespace: "foo", Name: "claim2"},
 			},
 		},
+		{
+			name: "test priority class",
+			pod: velerotest.UnstructuredOrDie(`
+			{
+				"apiVersion": "v1",
+				"kind": "Pod",
+				"metadata": {
+					"namespace": "foo",
+					"name": "bar"
+				},
+				"spec": {
+					"priorityClassName": "testPriorityClass"
+				}
+			}
+			`),
+			expected: []velero.ResourceIdentifier{
+				{GroupResource: kuberesource.PriorityClasses, Name: "testPriorityClass"},
+			},
+		},
 	}
 
 	for _, test := range tests {
diff --git a/pkg/kuberesource/kuberesource.go b/pkg/kuberesource/kuberesource.go
index a515a70ff..c2c2d84ee 100644
--- a/pkg/kuberesource/kuberesource.go
+++ b/pkg/kuberesource/kuberesource.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2018 the Velero contributors.
+Copyright the Velero contributors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -34,4 +34,5 @@ var (
 	VolumeSnapshotClasses     = schema.GroupResource{Group: "snapshot.storage.k8s.io", Resource: "volumesnapshotclasses"}
 	VolumeSnapshots           = schema.GroupResource{Group: "snapshot.storage.k8s.io", Resource: "volumesnapshots"}
 	VolumeSnapshotContents    = schema.GroupResource{Group: "snapshot.storage.k8s.io", Resource: "volumesnapshotcontents"}
+	PriorityClasses           = schema.GroupResource{Group: "scheduling.k8s.io", Resource: "priorityclasses"}
 )
diff --git a/pkg/restore/pod_action.go b/pkg/restore/pod_action.go
index 2086954ae..d4bdc1384 100644
--- a/pkg/restore/pod_action.go
+++ b/pkg/restore/pod_action.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2017 the Velero contributors.
+Copyright the Velero contributors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -25,6 +25,7 @@ import (
 	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
 	"k8s.io/apimachinery/pkg/runtime"
 
+	"github.com/vmware-tanzu/velero/pkg/kuberesource"
 	"github.com/vmware-tanzu/velero/pkg/plugin/velero"
 )
 
@@ -85,6 +86,11 @@ func (a *PodAction) Execute(input *velero.RestoreItemActionExecuteInput) (*veler
 	if err != nil {
 		return nil, errors.WithStack(err)
 	}
-
-	return velero.NewRestoreItemActionExecuteOutput(&unstructured.Unstructured{Object: res}), nil
+	restoreExecuteOutput := velero.NewRestoreItemActionExecuteOutput(&unstructured.Unstructured{Object: res})
+	if pod.Spec.PriorityClassName != "" {
+		a.logger.Infof("Adding priorityclass %s to AdditionalItems", pod.Spec.PriorityClassName)
+		restoreExecuteOutput.AdditionalItems = []velero.ResourceIdentifier{
+			{GroupResource: kuberesource.PriorityClasses, Name: pod.Spec.PriorityClassName}}
+	}
+	return restoreExecuteOutput, nil
 }
diff --git a/pkg/restore/pod_action_test.go b/pkg/restore/pod_action_test.go
index 1d0165541..f1aa83c1a 100644
--- a/pkg/restore/pod_action_test.go
+++ b/pkg/restore/pod_action_test.go
@@ -1,5 +1,5 @@
 /*
-Copyright 2017, 2019 the Velero contributors.
+Copyright the Velero contributors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -26,6 +26,7 @@ import (
 	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
 	"k8s.io/apimachinery/pkg/runtime"
 
+	"github.com/vmware-tanzu/velero/pkg/kuberesource"
 	"github.com/vmware-tanzu/velero/pkg/plugin/velero"
 	velerotest "github.com/vmware-tanzu/velero/pkg/test"
 )
@@ -34,10 +35,11 @@ func TestPodActionExecute(t *testing.T) {
 	var priority int32 = 1
 
 	tests := []struct {
-		name        string
-		obj         corev1api.Pod
-		expectedErr bool
-		expectedRes corev1api.Pod
+		name            string
+		obj             corev1api.Pod
+		expectedErr     bool
+		expectedRes     corev1api.Pod
+		additionalItems []velero.ResourceIdentifier
 	}{
 		{
 			name: "nodeName (only) should be deleted from spec",
@@ -189,6 +191,35 @@ func TestPodActionExecute(t *testing.T) {
 				},
 			},
 		},
+		{
+			name: "test priority class",
+			obj: corev1api.Pod{
+				ObjectMeta: metav1.ObjectMeta{Name: "pod-1"},
+				Spec: corev1api.PodSpec{
+					ServiceAccountName: "foo",
+					PriorityClassName:  "testPriorityClass",
+					Volumes: []corev1api.Volume{
+						{Name: "foo"},
+						{Name: "foo-token-foo"},
+					},
+				},
+			},
+			expectedRes: corev1api.Pod{
+				ObjectMeta: metav1.ObjectMeta{Name: "pod-1"},
+				Spec: corev1api.PodSpec{
+					ServiceAccountName: "foo",
+					PriorityClassName:  "testPriorityClass",
+					Volumes: []corev1api.Volume{
+						{Name: "foo"},
+					},
+				},
+			},
+			additionalItems: []velero.ResourceIdentifier{
+				{GroupResource: kuberesource.PriorityClasses,
+					Name: "testPriorityClass",
+				},
+			},
+		},
 	}
 
 	for _, test := range tests {
@@ -214,6 +245,7 @@ func TestPodActionExecute(t *testing.T) {
 			require.NoError(t, runtime.DefaultUnstructuredConverter.FromUnstructured(res.UpdatedItem.UnstructuredContent(), &pod))
 
 			assert.Equal(t, test.expectedRes, pod)
+			assert.Equal(t, test.additionalItems, res.AdditionalItems)
 		})
 	}
 }