Puech is a French surname that comes from the Occitan word puèg, "hill". Notable people with the surname include:
Denys Puech (1854–1942), French sculptor Émile Puech (born 1941), French biblical scholar Henri-Charles Puech (1902–1986), French historian Jean Puech (born 1942), French politician Jean-Baptiste Puech, French actor Louis Puech (1852–1947), French politician Marie-Louise Puech-Milhau (1876-1966), French pacifist, feminist and journal editor Nicolas Puech (born 1943), French billionaire
See also Le Puech, a French commune Musée Denys-Puech, a French art gallery