diff --git a/.changelog/33937.txt b/.changelog/33937.txt
new file mode 100644
index 00000000000..67342be9cb0
--- /dev/null
+++ b/.changelog/33937.txt
@@ -0,0 +1,4 @@
+```release-note:enhancement
+resource/aws_transfer_server: Change `pre_authentication_login_banner` and `post_authentication_login_banner` length limits to 4096
+```
+
diff --git a/internal/service/transfer/server.go b/internal/service/transfer/server.go
index 3b39ea72c1b..8151e636b2e 100644
--- a/internal/service/transfer/server.go
+++ b/internal/service/transfer/server.go
@@ -165,13 +165,13 @@ func ResourceServer() *schema.Resource {
 				Type:         schema.TypeString,
 				Optional:     true,
 				Sensitive:    true,
-				ValidateFunc: validation.StringLenBetween(0, 512),
+				ValidateFunc: validation.StringLenBetween(0, 4096),
 			},
 			"pre_authentication_login_banner": {
 				Type:         schema.TypeString,
 				Optional:     true,
 				Sensitive:    true,
-				ValidateFunc: validation.StringLenBetween(0, 512),
+				ValidateFunc: validation.StringLenBetween(0, 4096),
 			},
 			"protocol_details": {
 				Type:     schema.TypeList,