diff --git a/.changelog/pending.txt b/.changelog/pending.txt
new file mode 100644
index 000000000..8fe5c6369
--- /dev/null
+++ b/.changelog/pending.txt
@@ -0,0 +1,3 @@
+```release-note:breaking-change
+tfsdk: The `ResourceImportStateNotImplemented()` function has been removed. Remove the `Resource` type `ImportState` method instead for resources that should not support import.
+```
diff --git a/internal/proto6server/serve_import.go b/internal/proto6server/serve_import.go
index 03aac0895..ad3241f7e 100644
--- a/internal/proto6server/serve_import.go
+++ b/internal/proto6server/serve_import.go
@@ -135,7 +135,7 @@ func (s *Server) importResourceState(ctx context.Context, req *tfprotov6.ImportR
 		resp.Diagnostics.AddError(
 			"Missing Resource Import State",
 			"An unexpected error was encountered when importing the resource. This is always a problem with the provider. Please give the following information to the provider developer:\n\n"+
-				"Resource ImportState method returned no State in response. If import is intentionally not supported, call the ResourceImportStateNotImplemented() function or return an error.",
+				"Resource ImportState method returned no State in response. If import is intentionally not supported, remove the Resource type ImportState method or return an error.",
 		)
 		return
 	}
diff --git a/internal/proto6server/serve_import_test.go b/internal/proto6server/serve_import_test.go
index 60d2bf6fe..0cdfe106d 100644
--- a/internal/proto6server/serve_import_test.go
+++ b/internal/proto6server/serve_import_test.go
@@ -96,27 +96,6 @@ func TestServerImportResourceState(t *testing.T) {
 				},
 			},
 		},
-		"ResourceImportStateNotImplemented": {
-			req: &tfprotov6.ImportResourceStateRequest{
-				ID:       "test",
-				TypeName: "test_import_state",
-			},
-
-			impl: func(ctx context.Context, req tfsdk.ImportResourceStateRequest, resp *tfsdk.ImportResourceStateResponse) {
-				//nolint:staticcheck // This will be removed before the next minor release.
-				tfsdk.ResourceImportStateNotImplemented(ctx, "", resp)
-			},
-
-			resp: &tfprotov6.ImportResourceStateResponse{
-				Diagnostics: []*tfprotov6.Diagnostic{
-					{
-						Summary:  "Resource Import Not Implemented",
-						Severity: tfprotov6.DiagnosticSeverityError,
-						Detail:   "This resource does not support import. Please contact the provider developer for additional information.",
-					},
-				},
-			},
-		},
 		"imported_resource_conversion_error": {
 			req: &tfprotov6.ImportResourceStateRequest{
 				ID:       "test",
@@ -153,7 +132,7 @@ func TestServerImportResourceState(t *testing.T) {
 						Summary:  "Missing Resource Import State",
 						Severity: tfprotov6.DiagnosticSeverityError,
 						Detail: "An unexpected error was encountered when importing the resource. This is always a problem with the provider. Please give the following information to the provider developer:\n\n" +
-							"Resource ImportState method returned no State in response. If import is intentionally not supported, call the ResourceImportStateNotImplemented() function or return an error.",
+							"Resource ImportState method returned no State in response. If import is intentionally not supported, remove the Resource type ImportState method or return an error.",
 					},
 				},
 			},
diff --git a/internal/proto6server/serve_resource_upgrade_state_not_implemented_test.go b/internal/proto6server/serve_resource_upgrade_state_not_implemented_test.go
index f845ebe6d..f413d8669 100644
--- a/internal/proto6server/serve_resource_upgrade_state_not_implemented_test.go
+++ b/internal/proto6server/serve_resource_upgrade_state_not_implemented_test.go
@@ -86,7 +86,3 @@ func (r testServeResourceUpgradeStateNotImplemented) Update(ctx context.Context,
 func (r testServeResourceUpgradeStateNotImplemented) Delete(ctx context.Context, req tfsdk.DeleteResourceRequest, resp *tfsdk.DeleteResourceResponse) {
 	// Intentionally blank. Not expected to be called during testing.
 }
-func (r testServeResourceUpgradeStateNotImplemented) ImportState(ctx context.Context, req tfsdk.ImportResourceStateRequest, resp *tfsdk.ImportResourceStateResponse) {
-	//nolint:staticcheck // This will be removed before the next minor release.
-	tfsdk.ResourceImportStateNotImplemented(ctx, "intentionally not implemented", resp)
-}
diff --git a/tfsdk/resource_import.go b/tfsdk/resource_import.go
index f22018910..93e22a5c7 100644
--- a/tfsdk/resource_import.go
+++ b/tfsdk/resource_import.go
@@ -20,23 +20,6 @@ type ResourceWithImportState interface {
 	ImportState(context.Context, ImportResourceStateRequest, *ImportResourceStateResponse)
 }
 
-// ResourceImportStateNotImplemented is a helper function to return an error
-// diagnostic about the resource not supporting import. The details defaults
-// to a generic message to contact the provider developer, but can be
-// customized to provide specific information or recommendations.
-//
-// Deprecated: Remove the ImportState method from the Resource instead.
-func ResourceImportStateNotImplemented(ctx context.Context, details string, resp *ImportResourceStateResponse) {
-	if details == "" {
-		details = "This resource does not support import. Please contact the provider developer for additional information."
-	}
-
-	resp.Diagnostics.AddError(
-		"Resource Import Not Implemented",
-		details,
-	)
-}
-
 // ResourceImportStatePassthroughID is a helper function to set the import
 // identifier to a given state attribute path. The attribute must accept a
 // string value.