diff --git a/.changelog/44570.txt b/.changelog/44570.txt
new file mode 100644
index 000000000000..b9f331ff9d73
--- /dev/null
+++ b/.changelog/44570.txt
@@ -0,0 +1,3 @@
+```release-note:enhancement
+resource/aws_sagemaker_notebook_instance: Add `notebook-al2023-v1` to valid `platform_identifier` values
+```
diff --git a/internal/service/sagemaker/notebook_instance.go b/internal/service/sagemaker/notebook_instance.go
index 0bb3527eb2c9..54d8dc43a63d 100644
--- a/internal/service/sagemaker/notebook_instance.go
+++ b/internal/service/sagemaker/notebook_instance.go
@@ -115,7 +115,7 @@ func resourceNotebookInstance() *schema.Resource {
 				Optional:     true,
 				Computed:     true,
 				ForceNew:     true,
-				ValidateFunc: validation.StringMatch(regexache.MustCompile(`^(notebook-al1-v1|notebook-al2-v1|notebook-al2-v2|notebook-al2-v3)$`), ""),
+				ValidateFunc: validation.StringMatch(regexache.MustCompile(`^(notebook-al1-v1|notebook-al2-v1|notebook-al2-v2|notebook-al2-v3|notebook-al2023-v1)$`), ""),
 			},
 			names.AttrRoleARN: {
 				Type:         schema.TypeString,
diff --git a/internal/service/sagemaker/notebook_instance_test.go b/internal/service/sagemaker/notebook_instance_test.go
index 606efd497d47..5418913848e2 100644
--- a/internal/service/sagemaker/notebook_instance_test.go
+++ b/internal/service/sagemaker/notebook_instance_test.go
@@ -50,7 +50,7 @@ func TestAccSageMakerNotebookInstance_basic(t *testing.T) {
 					resource.TestCheckResourceAttr(resourceName, "instance_metadata_service_configuration.0.minimum_instance_metadata_service_version", "2"),
 					resource.TestCheckResourceAttr(resourceName, names.AttrInstanceType, "ml.t2.medium"),
 					resource.TestCheckResourceAttr(resourceName, names.AttrName, rName),
-					resource.TestCheckResourceAttr(resourceName, "platform_identifier", "notebook-al2-v2"),
+					resource.TestCheckResourceAttr(resourceName, "platform_identifier", "notebook-al2-v3"),
 					resource.TestCheckResourceAttrPair(resourceName, names.AttrRoleARN, "aws_iam_role.test", names.AttrARN),
 					resource.TestCheckResourceAttr(resourceName, "root_access", "Enabled"),
 					resource.TestCheckResourceAttr(resourceName, "security_groups.#", "0"),
@@ -409,10 +409,10 @@ func TestAccSageMakerNotebookInstance_Platform_identifier(t *testing.T) {
 		CheckDestroy:             testAccCheckNotebookInstanceDestroy(ctx),
 		Steps: []resource.TestStep{
 			{
-				Config: testAccNotebookInstanceConfig_platformIdentifier(rName, "notebook-al2-v1"),
+				Config: testAccNotebookInstanceConfig_platformIdentifier(rName, "notebook-al2-v3"),
 				Check: resource.ComposeTestCheckFunc(
 					testAccCheckNotebookInstanceExists(ctx, resourceName, &notebook),
-					resource.TestCheckResourceAttr(resourceName, "platform_identifier", "notebook-al2-v1"),
+					resource.TestCheckResourceAttr(resourceName, "platform_identifier", "notebook-al2-v3"),
 				),
 			},
 			{
@@ -421,17 +421,10 @@ func TestAccSageMakerNotebookInstance_Platform_identifier(t *testing.T) {
 				ImportStateVerify: true,
 			},
 			{
-				Config: testAccNotebookInstanceConfig_platformIdentifier(rName, "notebook-al2-v2"),
-				Check: resource.ComposeTestCheckFunc(
-					testAccCheckNotebookInstanceExists(ctx, resourceName, &notebook),
-					resource.TestCheckResourceAttr(resourceName, "platform_identifier", "notebook-al2-v2"),
-				),
-			},
-			{
-				Config: testAccNotebookInstanceConfig_platformIdentifier(rName, "notebook-al2-v3"),
+				Config: testAccNotebookInstanceConfig_platformIdentifier(rName, "notebook-al2023-v1"),
 				Check: resource.ComposeTestCheckFunc(
 					testAccCheckNotebookInstanceExists(ctx, resourceName, &notebook),
-					resource.TestCheckResourceAttr(resourceName, "platform_identifier", "notebook-al2-v3"),
+					resource.TestCheckResourceAttr(resourceName, "platform_identifier", "notebook-al2023-v1"),
 				),
 			},
 		},
diff --git a/website/docs/r/sagemaker_notebook_instance.html.markdown b/website/docs/r/sagemaker_notebook_instance.html.markdown
index 5ddc9fde8207..35d10fc5070a 100644
--- a/website/docs/r/sagemaker_notebook_instance.html.markdown
+++ b/website/docs/r/sagemaker_notebook_instance.html.markdown
@@ -57,7 +57,7 @@ This resource supports the following arguments:
 * `name` - (Required) The name of the notebook instance (must be unique).
 * `role_arn` - (Required) The ARN of the IAM role to be used by the notebook instance which allows SageMaker AI to call other services on your behalf.
 * `instance_type` - (Required) The name of ML compute instance type.
-* `platform_identifier` - (Optional) The platform identifier of the notebook instance runtime environment. This value can be either `notebook-al1-v1`, `notebook-al2-v1`, `notebook-al2-v2`, or `notebook-al2-v3`, depending on which version of Amazon Linux you require.
+* `platform_identifier` - (Optional) The platform identifier of the notebook instance runtime environment. This value can be either `notebook-al1-v1`(deprecated), `notebook-al2-v1`(deprecated), `notebook-al2-v2`(deprecated), `notebook-al2-v3`, or `notebook-al2023-v1`, depending on which version of Amazon Linux you require. Defaults to `notebook-al2-v3`.
 * `volume_size` - (Optional) The size, in GB, of the ML storage volume to attach to the notebook instance. The default value is 5 GB.
 * `subnet_id` - (Optional) The VPC subnet ID.
 * `security_groups` - (Optional) The associated security groups.