diff --git a/marimo/_output/formatters/formatters.py b/marimo/_output/formatters/formatters.py
index 81ced8473a7..3a30a6e4a46 100644
--- a/marimo/_output/formatters/formatters.py
+++ b/marimo/_output/formatters/formatters.py
@@ -25,6 +25,7 @@
 from marimo._output.formatters.panel_formatters import PanelFormatter
 from marimo._output.formatters.plotly_formatters import PlotlyFormatter
 from marimo._output.formatters.pyecharts_formatters import PyechartsFormatter
+from marimo._output.formatters.pygwalker_formatters import PygWalkerFormatter
 from marimo._output.formatters.seaborn_formatters import SeabornFormatter
 from marimo._output.formatters.structures import StructuresFormatter
 from marimo._output.formatters.sympy_formatters import SympyFormatter
@@ -39,6 +40,7 @@
     PandasFormatter.package_name(): PandasFormatter(),
     PolarsFormatter.package_name(): PolarsFormatter(),
     PyArrowFormatter.package_name(): PyArrowFormatter(),
+    PygWalkerFormatter.package_name(): PygWalkerFormatter(),
     PlotlyFormatter.package_name(): PlotlyFormatter(),
     SeabornFormatter.package_name(): SeabornFormatter(),
     LeafmapFormatter.package_name(): LeafmapFormatter(),
diff --git a/marimo/_output/formatters/pygwalker_formatters.py b/marimo/_output/formatters/pygwalker_formatters.py
new file mode 100644
index 00000000000..45b6db62150
--- /dev/null
+++ b/marimo/_output/formatters/pygwalker_formatters.py
@@ -0,0 +1,24 @@
+# Copyright 2024 Marimo. All rights reserved.
+from __future__ import annotations
+
+from marimo._output.formatters.formatter_factory import FormatterFactory
+from marimo._runtime.context.utils import running_in_notebook
+
+
+class PygWalkerFormatter(FormatterFactory):
+    @staticmethod
+    def package_name() -> str:
+        return "pygwalker"
+
+    def register(self) -> None:
+        if running_in_notebook():
+            # monkey-patch pygwalker.walk to work in marimo;
+            # older versions of marimo may not have api.marimo, and not sure
+            # about pygwalker's API stability, so use a coarse try/except
+            try:
+                import pygwalker  # type: ignore
+                from pygwalker.api.marimo import walk  # type: ignore
+
+                pygwalker.walk = walk  # type: ignore
+            except Exception:
+                pass
diff --git a/marimo/_smoke_tests/pygwalker_test.py b/marimo/_smoke_tests/pygwalker_test.py
new file mode 100644
index 00000000000..36c5174622c
--- /dev/null
+++ b/marimo/_smoke_tests/pygwalker_test.py
@@ -0,0 +1,23 @@
+import marimo
+
+__generated_with = "0.9.14"
+app = marimo.App(width="medium")
+
+
+@app.cell
+def __():
+    import pygwalker
+
+    from vega_datasets import data
+    return data, pygwalker
+
+
+@app.cell
+def __(data, pygwalker):
+    df = data.iris()
+    pygwalker.walk(df)
+    return (df,)
+
+
+if __name__ == "__main__":
+    app.run()