diff --git a/frontend/src/components/editor/actions/useCopyNotebook.tsx b/frontend/src/components/editor/actions/useCopyNotebook.tsx
new file mode 100644
index 00000000000..949f37b4f11
--- /dev/null
+++ b/frontend/src/components/editor/actions/useCopyNotebook.tsx
@@ -0,0 +1,38 @@
+/* Copyright 2024 Marimo. All rights reserved. */
+import { useImperativeModal } from "@/components/modal/ImperativeModal";
+import { toast } from "@/components/ui/use-toast";
+import { sendCopy } from "@/core/network/requests";
+import { PathBuilder, Paths } from "@/utils/paths";
+
+export function useCopyNotebook(source: string | null) {
+  const { openPrompt, closeModal } = useImperativeModal();
+
+  return () => {
+    if (!source) {
+      return null;
+    }
+    const pathBuilder = PathBuilder.guessDeliminator(source);
+    const filename = Paths.basename(source);
+
+    openPrompt({
+      title: "Copy notebook",
+      description: "Enter a new filename for the notebook copy.",
+      defaultValue: `_${filename}`,
+      confirmText: "Copy notebook",
+      spellCheck: false,
+      onConfirm: (destination: string) => {
+        sendCopy({
+          source: source,
+          destination: pathBuilder.join(Paths.dirname(source), destination),
+        }).then(() => {
+          closeModal();
+          toast({
+            title: "Notebook copied",
+            description: "A copy of the notebook has been created.",
+          });
+          window.open(`/?file=${destination}`, "_blank");
+        });
+      },
+    });
+  };
+}
diff --git a/frontend/src/components/editor/actions/useNotebookActions.tsx b/frontend/src/components/editor/actions/useNotebookActions.tsx
index 0ab296d0125..b22ea547863 100644
--- a/frontend/src/components/editor/actions/useNotebookActions.tsx
+++ b/frontend/src/components/editor/actions/useNotebookActions.tsx
@@ -29,6 +29,7 @@ import {
   PresentationIcon,
   EditIcon,
   LayoutTemplateIcon,
+  Files,
 } from "lucide-react";
 import { commandPaletteAtom } from "../controls/command-palette";
 import { useCellActions, useNotebook } from "@/core/cells/cells";
@@ -61,6 +62,8 @@ import { LAYOUT_TYPES } from "../renderers/types";
 import { displayLayoutName, getLayoutIcon } from "../renderers/layout-select";
 import { useLayoutState, useLayoutActions } from "@/core/layout/layout";
 import { useTogglePresenting } from "@/core/layout/useTogglePresenting";
+import { useCopyNotebook } from "./useCopyNotebook";
+import { isWasm } from "@/core/wasm/utils";
 
 const NOOP_HANDLER = (event?: Event) => {
   event?.preventDefault();
@@ -78,6 +81,7 @@ export function useNotebookActions() {
   const notebook = useNotebook();
   const { updateCellConfig, undoDeleteCell } = useCellActions();
   const restartKernel = useRestartKernel();
+  const copyNotebook = useCopyNotebook(filename);
   const setCommandPaletteOpen = useSetAtom(commandPaletteAtom);
   const setKeyboardShortcutsOpen = useSetAtom(keyboardShortcutsAtom);
 
@@ -274,6 +278,12 @@ export function useNotebookActions() {
       ],
     },
 
+    {
+      icon: <Files size={14} strokeWidth={1.5} />,
+      label: "Create notebook copy",
+      hidden: !filename || isWasm(),
+      handle: copyNotebook,
+    },
     {
       icon: <ClipboardCopyIcon size={14} strokeWidth={1.5} />,
       label: "Copy code to clipboard",
diff --git a/frontend/src/components/modal/ImperativeModal.tsx b/frontend/src/components/modal/ImperativeModal.tsx
index 4f075a5f656..8919728ed07 100644
--- a/frontend/src/components/modal/ImperativeModal.tsx
+++ b/frontend/src/components/modal/ImperativeModal.tsx
@@ -99,6 +99,8 @@ export function useImperativeModal() {
       title: React.ReactNode;
       description?: React.ReactNode;
       defaultValue?: string;
+      spellCheck?: boolean;
+      confirmText?: string;
       onConfirm: (value: string) => void;
     }) => {
       context.setModal(
@@ -124,6 +126,7 @@ export function useImperativeModal() {
                   {opts.description}
                 </AlertDialogDescription>
                 <Input
+                  spellCheck={opts.spellCheck}
                   defaultValue={opts.defaultValue}
                   className="my-4 h-8"
                   name="prompt"
@@ -136,7 +139,7 @@ export function useImperativeModal() {
                 <AlertDialogCancel onClick={closeModal}>
                   Cancel
                 </AlertDialogCancel>
-                <Button type="submit">Ok</Button>
+                <Button type="submit">{opts.confirmText ?? "Ok"}</Button>
               </AlertDialogFooter>
             </form>
           </AlertDialogContent>
diff --git a/frontend/src/core/islands/bridge.ts b/frontend/src/core/islands/bridge.ts
index d3bfe1f894f..7c970552307 100644
--- a/frontend/src/core/islands/bridge.ts
+++ b/frontend/src/core/islands/bridge.ts
@@ -125,6 +125,7 @@ export class IslandsPyodideBridge implements RunRequests, EditRequests {
   getUsageStats = throwNotImplemented;
   sendRename = throwNotImplemented;
   sendSave = throwNotImplemented;
+  sendCopy = throwNotImplemented;
   sendRunScratchpad = throwNotImplemented;
   sendStdin = throwNotImplemented;
   sendInterrupt = throwNotImplemented;
diff --git a/frontend/src/core/network/requests-network.ts b/frontend/src/core/network/requests-network.ts
index b1cfa3bb9bd..629a7ee32c5 100644
--- a/frontend/src/core/network/requests-network.ts
+++ b/frontend/src/core/network/requests-network.ts
@@ -40,6 +40,14 @@ export function createNetworkRequests(): EditRequests & RunRequests {
         })
         .then(handleResponseReturnNull);
     },
+    sendCopy: (request) => {
+      return marimoClient
+        .POST("/api/kernel/copy", {
+          body: request,
+          parseAs: "text",
+        })
+        .then(handleResponseReturnNull);
+    },
     sendFormat: (request) => {
       return marimoClient
         .POST("/api/kernel/format", {
diff --git a/frontend/src/core/network/requests-static.ts b/frontend/src/core/network/requests-static.ts
index 1aaf22b20fa..7728c10d76e 100644
--- a/frontend/src/core/network/requests-static.ts
+++ b/frontend/src/core/network/requests-static.ts
@@ -37,6 +37,7 @@ export function createStaticRequests(): EditRequests & RunRequests {
     sendRunScratchpad: throwNotInEditMode,
     sendRename: throwNotInEditMode,
     sendSave: throwNotInEditMode,
+    sendCopy: throwNotInEditMode,
     sendInterrupt: throwNotInEditMode,
     sendShutdown: throwNotInEditMode,
     sendFormat: throwNotInEditMode,
diff --git a/frontend/src/core/network/requests-toasting.ts b/frontend/src/core/network/requests-toasting.ts
index 035633b4dfc..b9f0540ab74 100644
--- a/frontend/src/core/network/requests-toasting.ts
+++ b/frontend/src/core/network/requests-toasting.ts
@@ -18,6 +18,7 @@ export function createErrorToastingRequests(
     sendRunScratchpad: "Failed to run scratchpad",
     sendRename: "Failed to rename",
     sendSave: "Failed to save",
+    sendCopy: "Failed to copy",
     sendInterrupt: "Failed to interrupt",
     sendShutdown: "Failed to shutdown",
     sendFormat: "Failed to format",
diff --git a/frontend/src/core/network/requests.ts b/frontend/src/core/network/requests.ts
index 06d7bce9dc7..1a0addf04b0 100644
--- a/frontend/src/core/network/requests.ts
+++ b/frontend/src/core/network/requests.ts
@@ -31,6 +31,7 @@ export const {
   sendRestart,
   syncCellIds,
   sendSave,
+  sendCopy,
   sendStdin,
   sendFormat,
   sendInterrupt,
diff --git a/frontend/src/core/network/types.ts b/frontend/src/core/network/types.ts
index 9625c47c86b..d82ef1b4a1b 100644
--- a/frontend/src/core/network/types.ts
+++ b/frontend/src/core/network/types.ts
@@ -56,6 +56,7 @@ export type RunScratchpadRequest = schemas["RunScratchpadRequest"];
 export type SaveAppConfigurationRequest =
   schemas["SaveAppConfigurationRequest"];
 export type SaveNotebookRequest = schemas["SaveNotebookRequest"];
+export type CopyNotebookRequest = schemas["CopyNotebookRequest"];
 export type SaveUserConfigurationRequest =
   schemas["SaveUserConfigurationRequest"];
 export interface SetCellConfigRequest {
@@ -95,6 +96,7 @@ export interface RunRequests {
 export interface EditRequests {
   sendRename: (request: RenameFileRequest) => Promise<null>;
   sendSave: (request: SaveNotebookRequest) => Promise<null>;
+  sendCopy: (request: CopyNotebookRequest) => Promise<null>;
   sendStdin: (request: StdinRequest) => Promise<null>;
   sendRun: (request: RunRequest) => Promise<null>;
   sendRunScratchpad: (request: RunScratchpadRequest) => Promise<null>;
diff --git a/frontend/src/core/wasm/bridge.ts b/frontend/src/core/wasm/bridge.ts
index 6e6cd1ce448..01ed06d1f10 100644
--- a/frontend/src/core/wasm/bridge.ts
+++ b/frontend/src/core/wasm/bridge.ts
@@ -187,6 +187,10 @@ export class PyodideBridge implements RunRequests, EditRequests {
     return null;
   };
 
+  sendCopy: EditRequests["sendCopy"] = async () => {
+    throwNotImplemented();
+  };
+
   sendStdin: EditRequests["sendStdin"] = async (request) => {
     await this.rpc.proxy.request.bridge({
       functionName: "put_input",
diff --git a/frontend/src/core/wasm/worker/types.ts b/frontend/src/core/wasm/worker/types.ts
index 34054fa0c36..3364ce192d5 100644
--- a/frontend/src/core/wasm/worker/types.ts
+++ b/frontend/src/core/wasm/worker/types.ts
@@ -2,6 +2,7 @@
 import type { PyodideInterface } from "pyodide";
 import type {
   CodeCompletionRequest,
+  CopyNotebookRequest,
   ExportAsHTMLRequest,
   FileCreateRequest,
   FileCreateResponse,
@@ -66,6 +67,7 @@ export interface RawBridge {
   read_snippets(): Promise<Snippets>;
   format(request: FormatRequest): Promise<FormatResponse>;
   save(request: SaveNotebookRequest): Promise<string>;
+  copy(request: CopyNotebookRequest): Promise<string>;
   save_app_config(request: SaveAppConfigurationRequest): Promise<string>;
   save_user_config(request: SaveUserConfigurationRequest): Promise<null>;
   rename_file(request: string): Promise<string>;
diff --git a/marimo/_cli/development/commands.py b/marimo/_cli/development/commands.py
index 9169d61fefc..4e818bc3fd8 100644
--- a/marimo/_cli/development/commands.py
+++ b/marimo/_cli/development/commands.py
@@ -149,6 +149,7 @@ def _generate_schema() -> dict[str, Any]:
         models.RunScratchpadRequest,
         models.SaveAppConfigurationRequest,
         models.SaveNotebookRequest,
+        models.CopyNotebookRequest,
         models.SaveUserConfigurationRequest,
         models.StdinRequest,
         models.SuccessResponse,
diff --git a/marimo/_server/api/endpoints/files.py b/marimo/_server/api/endpoints/files.py
index fc14e526604..5574521e966 100644
--- a/marimo/_server/api/endpoints/files.py
+++ b/marimo/_server/api/endpoints/files.py
@@ -15,6 +15,7 @@
 from marimo._server.api.utils import parse_request
 from marimo._server.models.models import (
     BaseResponse,
+    CopyNotebookRequest,
     OpenFileRequest,
     ReadCodeResponse,
     RenameFileRequest,
@@ -182,6 +183,34 @@ async def save(
     return PlainTextResponse(content=contents)
 
 
+@router.post("/copy")
+@requires("edit")
+async def copy(
+    *,
+    request: Request,
+) -> PlainTextResponse:
+    """
+    requestBody:
+        content:
+            application/json:
+                schema:
+                    $ref: "#/components/schemas/CopyNotebookRequest"
+    responses:
+        200:
+            description: Copy notebook
+            content:
+                text/plain:
+                    schema:
+                        type: string
+    """
+    app_state = AppState(request)
+    body = await parse_request(request, cls=CopyNotebookRequest)
+    session = app_state.require_current_session()
+    contents = session.app_file_manager.copy(body)
+
+    return PlainTextResponse(content=contents)
+
+
 @router.post("/save_app_config")
 @requires("edit")
 async def save_app_config(
diff --git a/marimo/_server/file_manager.py b/marimo/_server/file_manager.py
index d7fc6f212b7..61ceee281f7 100644
--- a/marimo/_server/file_manager.py
+++ b/marimo/_server/file_manager.py
@@ -3,6 +3,7 @@
 
 import os
 import pathlib
+import shutil
 from typing import Any, Dict, Optional
 
 from marimo import _loggers
@@ -16,7 +17,10 @@
     save_layout_config,
 )
 from marimo._server.api.status import HTTPException, HTTPStatus
-from marimo._server.models.models import SaveNotebookRequest
+from marimo._server.models.models import (
+    CopyNotebookRequest,
+    SaveNotebookRequest,
+)
 from marimo._server.utils import canonicalize_filename
 
 LOGGER = _loggers.marimo_logger()
@@ -270,6 +274,11 @@ def save(self, request: SaveNotebookRequest) -> str:
             persist=request.persist,
         )
 
+    def copy(self, request: CopyNotebookRequest) -> str:
+        source, destination = request.source, request.destination
+        shutil.copy(source, destination)
+        return os.path.basename(destination)
+
     def to_code(self) -> str:
         """Read the contents of the unsaved file."""
         contents = codegen.generate_filecontents(
diff --git a/marimo/_server/models/models.py b/marimo/_server/models/models.py
index 1ff4af47861..12d212dc7df 100644
--- a/marimo/_server/models/models.py
+++ b/marimo/_server/models/models.py
@@ -132,6 +132,26 @@ def __post_init__(self) -> None:
         ), "Mismatched cell_ids and configs"
 
 
+@dataclass
+class CopyNotebookRequest:
+    # path to app
+    source: str
+    destination: str
+
+    # Validate filenames are valid, and destination path does not already exist
+    def __post_init__(self) -> None:
+        destination = os.path.basename(self.destination)
+        assert self.source is not None
+        assert self.destination is not None
+        assert os.path.exists(self.source), (
+            f'File "{self.source}" does not exist.'
+            + "Please save the notebook and try again."
+        )
+        assert not os.path.exists(
+            self.destination
+        ), f'File "{destination}" already exists in this directory.'
+
+
 @dataclass
 class SaveAppConfigurationRequest:
     # partial app config
diff --git a/openapi/api.yaml b/openapi/api.yaml
index 1e5a19d544a..f3b644d04f3 100644
--- a/openapi/api.yaml
+++ b/openapi/api.yaml
@@ -2241,6 +2241,20 @@ paths:
               schema:
                 type: string
           description: Save the current app
+  /api/kernel/copy:
+    post:
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/CopyNotebookRequest'
+      responses:
+        200:
+          content:
+            text/plain:
+              schema:
+                type: string
+          description: Copy notebook
   /api/kernel/save_app_config:
     post:
       requestBody:
diff --git a/openapi/src/api.ts b/openapi/src/api.ts
index 95c27d89945..3bd54c5777c 100644
--- a/openapi/src/api.ts
+++ b/openapi/src/api.ts
@@ -1233,6 +1233,45 @@ export interface paths {
     patch?: never;
     trace?: never;
   };
+  "/api/kernel/copy": {
+    parameters: {
+      query?: never;
+      header?: never;
+      path?: never;
+      cookie?: never;
+    };
+    get?: never;
+    put?: never;
+    post: {
+      parameters: {
+        query?: never;
+        header?: never;
+        path?: never;
+        cookie?: never;
+      };
+      requestBody?: {
+        content: {
+          "application/json": components["schemas"]["CopyNotebookRequest"];
+        };
+      };
+      responses: {
+        /** @description Save the app as a new file */
+        200: {
+          headers: {
+            [name: string]: unknown;
+          };
+          content: {
+            "text/plain": string;
+          };
+        };
+      };
+    };
+    delete?: never;
+    options?: never;
+    head?: never;
+    patch?: never;
+    trace?: never;
+  };
   "/api/kernel/save_app_config": {
     parameters: {
       query?: never;
@@ -2367,6 +2406,10 @@ export interface components {
       names: string[];
       persist: boolean;
     };
+    CopyNotebookRequest: {
+      source: string;
+      destination: string;
+    };
     SaveUserConfigurationRequest: {
       config: components["schemas"]["MarimoConfig"];
     };
diff --git a/tests/_server/api/endpoints/test_files.py b/tests/_server/api/endpoints/test_files.py
index 00cfaef0272..c5c374aecc1 100644
--- a/tests/_server/api/endpoints/test_files.py
+++ b/tests/_server/api/endpoints/test_files.py
@@ -232,6 +232,32 @@ def test_save_app_config(client: TestClient) -> None:
     assert 'marimo.App(width="medium"' in file_contents
 
 
+@with_session(SESSION_ID)
+def test_copy_file(client: TestClient) -> None:
+    filename = get_session_manager(client).file_router.get_unique_file_key()
+    assert filename
+    assert os.path.exists(filename)
+    file_contents = open(filename).read()
+    assert "import marimo as mo" in file_contents
+    assert 'marimo.App(width="full"' in file_contents
+
+    filename_copy = f"_{os.path.basename(filename)}"
+    copied_file = os.path.join(os.path.dirname(filename), filename_copy)
+    response = client.post(
+        "/api/kernel/copy",
+        headers=HEADERS,
+        json={
+            "source": filename,
+            "destination": copied_file,
+        },
+    )
+    assert response.status_code == 200, response.text
+    assert filename_copy in response.text
+    file_contents = open(copied_file).read()
+    assert "import marimo as mo" in file_contents
+    assert 'marimo.App(width="full"' in file_contents
+
+
 @with_websocket_session(SESSION_ID)
 def test_rename_propagates(
     client: TestClient, websocket: WebSocketTestSession