diff --git a/.changelog/44483.txt b/.changelog/44483.txt
new file mode 100644
index 000000000000..1f26307228c4
--- /dev/null
+++ b/.changelog/44483.txt
@@ -0,0 +1,3 @@
+```release-note:enhancement
+resource/aws_backup_plan: Allow advanced_backup_setting blocks to accept the S3 resource type
+```
diff --git a/internal/service/backup/plan.go b/internal/service/backup/plan.go
index 35b48bb97ae9..8a93d8784a13 100644
--- a/internal/service/backup/plan.go
+++ b/internal/service/backup/plan.go
@@ -69,6 +69,7 @@ func resourcePlan() *schema.Resource {
 							Required: true,
 							ValidateFunc: validation.StringInSlice([]string{
 								"EC2",
+								"S3",
 							}, false),
 						},
 					},
diff --git a/internal/service/backup/plan_test.go b/internal/service/backup/plan_test.go
index 122ed8ddf3b1..11304e296318 100644
--- a/internal/service/backup/plan_test.go
+++ b/internal/service/backup/plan_test.go
@@ -552,12 +552,18 @@ func TestAccBackupPlan_advancedBackupSetting(t *testing.T) {
 				Check: resource.ComposeTestCheckFunc(
 					testAccCheckPlanExists(ctx, resourceName, &plan),
 					resource.TestCheckResourceAttr(resourceName, names.AttrName, rName),
-					resource.TestCheckResourceAttr(resourceName, "advanced_backup_setting.#", "1"),
+					resource.TestCheckResourceAttr(resourceName, "advanced_backup_setting.#", "2"),
 					resource.TestCheckTypeSetElemNestedAttrs(resourceName, "advanced_backup_setting.*", map[string]string{
 						"backup_options.%":          "1",
 						"backup_options.WindowsVSS": names.AttrEnabled,
 						names.AttrResourceType:      "EC2",
 					}),
+					resource.TestCheckTypeSetElemNestedAttrs(resourceName, "advanced_backup_setting.*", map[string]string{
+						"backup_options.%":                "2",
+						"backup_options.BackupACLs":       names.AttrEnabled,
+						"backup_options.BackupObjectTags": names.AttrEnabled,
+						names.AttrResourceType:            "S3",
+					}),
 				),
 			},
 			{
@@ -570,12 +576,18 @@ func TestAccBackupPlan_advancedBackupSetting(t *testing.T) {
 				Check: resource.ComposeTestCheckFunc(
 					testAccCheckPlanExists(ctx, resourceName, &plan),
 					resource.TestCheckResourceAttr(resourceName, names.AttrName, rName),
-					resource.TestCheckResourceAttr(resourceName, "advanced_backup_setting.#", "1"),
+					resource.TestCheckResourceAttr(resourceName, "advanced_backup_setting.#", "2"),
 					resource.TestCheckTypeSetElemNestedAttrs(resourceName, "advanced_backup_setting.*", map[string]string{
 						"backup_options.%":          "1",
 						"backup_options.WindowsVSS": "disabled",
 						names.AttrResourceType:      "EC2",
 					}),
+					resource.TestCheckTypeSetElemNestedAttrs(resourceName, "advanced_backup_setting.*", map[string]string{
+						"backup_options.%":                "2",
+						"backup_options.BackupACLs":       names.AttrEnabled,
+						"backup_options.BackupObjectTags": names.AttrEnabled,
+						names.AttrResourceType:            "S3",
+					}),
 				),
 			},
 		},
@@ -1133,6 +1145,15 @@ resource "aws_backup_plan" "test" {
 
     resource_type = "EC2"
   }
+
+	advanced_backup_setting {
+		backup_options = {
+			BackupACLs      = "enabled"
+			BackupObjectTags = "enabled"
+		}
+
+		resource_type = "S3"
+	}
 }
 `, rName)
 }
@@ -1164,6 +1185,15 @@ resource "aws_backup_plan" "test" {
 
     resource_type = "EC2"
   }
+
+	advanced_backup_setting {
+		backup_options = {
+			BackupACLs      = "enabled"
+			BackupObjectTags = "enabled"
+		}
+
+		resource_type = "S3"
+	}
 }
 `, rName)
 }
diff --git a/website/docs/r/backup_plan.html.markdown b/website/docs/r/backup_plan.html.markdown
index 30b3ac33ce77..0d04e60f3d0c 100644
--- a/website/docs/r/backup_plan.html.markdown
+++ b/website/docs/r/backup_plan.html.markdown
@@ -32,6 +32,14 @@ resource "aws_backup_plan" "example" {
     }
     resource_type = "EC2"
   }
+
+  advanced_backup_setting {
+    backup_options = {
+      BackupACLs       = "enabled"
+      BackupObjectTags = "enabled"
+    }
+    resource_type = "S3"
+  }
 }
 ```
 
@@ -79,8 +87,8 @@ This resource supports the following arguments:
 
 `advanced_backup_setting` supports the following arguments:
 
-* `backup_options` - (Required) Specifies the backup option for a selected resource. This option is only available for Windows VSS backup jobs. Set to `{ WindowsVSS = "enabled" }` to enable Windows VSS backup option and create a VSS Windows backup.
-* `resource_type` - (Required) The type of AWS resource to be backed up. For VSS Windows backups, the only supported resource type is Amazon EC2. Valid values: `EC2`.
+* `backup_options` - (Required) Specifies service-specific backup options for the selected resource. For Windows VSS backups, set to `{ WindowsVSS = "enabled" }` (or `"disabled"`). For Amazon S3 backups, configure `{ BackupACLs = "enabled"|"disabled", BackupObjectTags = "enabled"|"disabled" }` to control inclusion of ACLs and object tags.
+* `resource_type` - (Required) The type of AWS resource to be backed up. Valid values: `EC2`, `S3`.
 
 ## Attribute Reference