diff --git a/.changelog/37570.txt b/.changelog/37570.txt
new file mode 100644
index 000000000000..e2a6da5e1082
--- /dev/null
+++ b/.changelog/37570.txt
@@ -0,0 +1,3 @@
+```release-note:bug
+resource/aws_dynamodb_table_replica: Correctly set `kms_key_arn` on Read
+```
diff --git a/internal/service/dynamodb/table_replica.go b/internal/service/dynamodb/table_replica.go
index 92e8fa3b90af..6ca59eacfec1 100644
--- a/internal/service/dynamodb/table_replica.go
+++ b/internal/service/dynamodb/table_replica.go
@@ -75,8 +75,8 @@ func resourceTableReplica() *schema.Resource {
 				Type:         schema.TypeString,
 				Optional:     true,
 				Computed:     true,
-				ValidateFunc: verify.ValidARN,
 				ForceNew:     true,
+				ValidateFunc: verify.ValidARN,
 			},
 			"point_in_time_recovery": { // direct to replica
 				Type:     schema.TypeBool,
@@ -297,6 +297,10 @@ func resourceTableReplicaReadReplica(ctx context.Context, d *schema.ResourceData
 		return create.AppendDiagError(diags, names.DynamoDB, create.ErrActionReading, resNameTableReplica, d.Id(), fmt.Errorf("continuous backups: %w", err))
 	}
 
+	if table.SSEDescription != nil && table.SSEDescription.KMSMasterKeyArn != nil {
+		d.Set(names.AttrKMSKeyARN, table.SSEDescription.KMSMasterKeyArn)
+	}
+
 	if pitrOut != nil && pitrOut.ContinuousBackupsDescription != nil && pitrOut.ContinuousBackupsDescription.PointInTimeRecoveryDescription != nil {
 		d.Set("point_in_time_recovery", pitrOut.ContinuousBackupsDescription.PointInTimeRecoveryDescription.PointInTimeRecoveryStatus == awstypes.PointInTimeRecoveryStatusEnabled)
 	} else {
diff --git a/internal/service/dynamodb/table_replica_test.go b/internal/service/dynamodb/table_replica_test.go
index abb809d04e09..e47f5ec1b9e6 100644
--- a/internal/service/dynamodb/table_replica_test.go
+++ b/internal/service/dynamodb/table_replica_test.go
@@ -176,7 +176,7 @@ func TestAccDynamoDBTableReplica_pitrDefault(t *testing.T) {
 				Check: resource.ComposeAggregateTestCheckFunc(
 					testAccCheckTableReplicaExists(ctx, resourceName),
 					resource.TestCheckResourceAttr(resourceName, "point_in_time_recovery", "false"),
-					resource.TestCheckResourceAttr(resourceName, names.AttrKMSKeyARN, ""),
+					resource.TestCheckResourceAttrSet(resourceName, names.AttrKMSKeyARN),
 				),
 			},
 			{
@@ -184,7 +184,7 @@ func TestAccDynamoDBTableReplica_pitrDefault(t *testing.T) {
 				Check: resource.ComposeAggregateTestCheckFunc(
 					testAccCheckTableReplicaExists(ctx, resourceName),
 					resource.TestCheckResourceAttr(resourceName, "point_in_time_recovery", "true"),
-					resource.TestCheckResourceAttr(resourceName, names.AttrKMSKeyARN, ""),
+					resource.TestCheckResourceAttrSet(resourceName, names.AttrKMSKeyARN),
 				),
 			},
 			{
@@ -192,7 +192,7 @@ func TestAccDynamoDBTableReplica_pitrDefault(t *testing.T) {
 				Check: resource.ComposeAggregateTestCheckFunc(
 					testAccCheckTableReplicaExists(ctx, resourceName),
 					resource.TestCheckResourceAttr(resourceName, "point_in_time_recovery", "false"),
-					resource.TestCheckResourceAttr(resourceName, names.AttrKMSKeyARN, ""),
+					resource.TestCheckResourceAttrSet(resourceName, names.AttrKMSKeyARN),
 				),
 			},
 			{