| Darío Valenzuela | |
| Birth Date: | 1961 1, df=y |
| Birth Place: | Rancagua, Chile |
| Office: | Mayor of Rancagua |
| Term Start: | 6 December 1996 |
| Term End: | 6 December 2000 |
| Predecessor: | Esteban Valenzuela Van Treek |
| Successor: | Pedro Hernández Garrido |
| Party: | Popular Unitary Action Movement (1985−1988) Party for Democracy (1988−2007) Socialist Party (2011−present) |
| Profession: | Engineer |
| Relatives: | Esteban Valenzuela Van Treek Greny Valenzuela Van Treek[1] [2] |
Darío Valenzuela Van Treek (born 1961) is a Chilean engineer and politician who served as mayor of Rancagua.[3]