diff --git a/RELEASE.md b/RELEASE.md
index aac66f46b7..0278ef8442 100644
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -11,10 +11,11 @@ Please follow the established format:
 ## Bug fixes and other changes
 
 - Fix dataset factory patterns in Experiment Tracking. (#1588)
-- Improved feedback for copy to clipboard feature. (#1614)
+- Improve feedback for copy to clipboard feature. (#1614)
 - Ensure Kedro-Viz works when hosted on a URL subpath. (#1621)
 - Fix shareable URL modal to appear across the app. (#1639)
 - Refactor flowchart dataclasses to pydantic base models. (#1565)
+- Add kedro viz CLI command deprecation warning. (#1641)
 - Bump FAST API upper bounds. (#1634)
 
 # Release 6.6.1
diff --git a/docs/source/kedro-viz_visualisation.md b/docs/source/kedro-viz_visualisation.md
index 6d68dc9429..fc7ae7b92e 100644
--- a/docs/source/kedro-viz_visualisation.md
+++ b/docs/source/kedro-viz_visualisation.md
@@ -32,6 +32,11 @@ To start Kedro-Viz, type the following into your terminal from the project direc
 kedro viz
 ```
 
+```{important}
+The `kedro viz` command will be deprecated with the release of Kedro-Viz 7.0.0. 
+`kedro viz run` will be the new way to run the tool.
+```
+
 The command opens a browser tab to serve the visualisation at `http://127.0.0.1:4141/`.
 
 You should see the following:
diff --git a/package/kedro_viz/launchers/cli.py b/package/kedro_viz/launchers/cli.py
index ed974a6490..046d3dee3d 100644
--- a/package/kedro_viz/launchers/cli.py
+++ b/package/kedro_viz/launchers/cli.py
@@ -119,6 +119,14 @@ def viz(
             ),
         )
 
+    click.echo(
+        click.style(
+            "WARNING: The `kedro viz` command will be deprecated with the release of "
+            "Kedro-Viz 7.0.0. `kedro viz run` will be the new way to run the tool.",
+            fg="yellow",
+        ),
+    )
+
     try:
         if port in _VIZ_PROCESSES and _VIZ_PROCESSES[port].is_alive():
             _VIZ_PROCESSES[port].terminate()
diff --git a/package/tests/test_launchers/test_cli.py b/package/tests/test_launchers/test_cli.py
index f74b99be6c..a7dce2cea9 100644
--- a/package/tests/test_launchers/test_cli.py
+++ b/package/tests/test_launchers/test_cli.py
@@ -1,3 +1,5 @@
+from unittest.mock import call
+
 import pytest
 import requests
 from click.testing import CliRunner
@@ -134,14 +136,22 @@ def test_kedro_viz_command_should_log_outdated_version(mocker, mock_http_respons
     with runner.isolated_filesystem():
         runner.invoke(cli.commands, ["viz"])
 
-    mock_click_echo.assert_called_once_with(
-        "\x1b[33mWARNING: You are using an old version of Kedro Viz. "
-        f"You are using version {installed_version}; "
-        f"however, version {mock_version} is now available.\n"
-        "You should consider upgrading via the `pip install -U kedro-viz` command.\n"
-        "You can view the complete changelog at "
-        "https://github.com/kedro-org/kedro-viz/releases.\x1b[0m"
-    )
+    mock_click_echo_calls = [
+        call(
+            "\x1b[33mWARNING: You are using an old version of Kedro Viz. "
+            f"You are using version {installed_version}; "
+            f"however, version {mock_version} is now available.\n"
+            "You should consider upgrading via the `pip install -U kedro-viz` command.\n"
+            "You can view the complete changelog at "
+            "https://github.com/kedro-org/kedro-viz/releases.\x1b[0m"
+        ),
+        call(
+            "\x1b[33mWARNING: The `kedro viz` command will be deprecated with the release of "
+            "Kedro-Viz 7.0.0. `kedro viz run` will be the new way to run the tool.\x1b[0m",
+        ),
+    ]
+
+    mock_click_echo.assert_has_calls(mock_click_echo_calls)
 
 
 def test_kedro_viz_command_should_not_log_latest_version(mocker, mock_http_response):
@@ -156,7 +166,14 @@ def test_kedro_viz_command_should_not_log_latest_version(mocker, mock_http_respo
     with runner.isolated_filesystem():
         runner.invoke(cli.commands, ["viz"])
 
-    mock_click_echo.assert_not_called()
+    mock_click_echo_calls = [
+        call(
+            "\x1b[33mWARNING: The `kedro viz` command will be deprecated with the release of "
+            "Kedro-Viz 7.0.0. `kedro viz run` will be the new way to run the tool.\x1b[0m",
+        )
+    ]
+
+    mock_click_echo.assert_has_calls(mock_click_echo_calls)
 
 
 def test_kedro_viz_command_should_not_log_if_pypi_is_down(mocker, mock_http_response):
@@ -169,7 +186,14 @@ def test_kedro_viz_command_should_not_log_if_pypi_is_down(mocker, mock_http_resp
     with runner.isolated_filesystem():
         runner.invoke(cli.commands, ["viz"])
 
-    mock_click_echo.assert_not_called()
+    mock_click_echo_calls = [
+        call(
+            "\x1b[33mWARNING: The `kedro viz` command will be deprecated with the release of "
+            "Kedro-Viz 7.0.0. `kedro viz run` will be the new way to run the tool.\x1b[0m",
+        )
+    ]
+
+    mock_click_echo.assert_has_calls(mock_click_echo_calls)
 
 
 def test_kedro_viz_command_with_autoreload(