Marmottan is a surname. Notable people with the surname include:
- Anémone Marmottan (b. 1988), French alpine skier
- Paul Marmottan (1856–1932), French art historian, collector and patron
- Bibliothèque Marmottan, in Paris, France
- Musée Marmottan Monet, in Paris, France
See also
- Louis-Augustin Marmottin (1875–1960), French Catholic bishop