| Chhim Siek Leng | |
| Office: | Member of Parliament for Kampong Cham |
| Term Start: | 25 November 1998 |
| Term End: | 27 July 2008 |
| Office1: | Minister of Rural Development |
| Primeminister1: | Hun Sen |
| Term Start1: | 1998 |
| Term End1: | 2001 |
| Term Start2: | 1993 |
| Term End2: | 1998 |
| Predecessor2: | Sim Ka |
| Birth Date: | 12 April 1940 |
Chhim Siek Leng (Central Khmer: ឈឹម សៀកឡេង, born 12 April 1940) is a Cambodian politician. He belongs to the Funcinpec party and was elected to represent Kampong Cham in the National Assembly of Cambodia in 2003.[1] Leng was a close ally of then-party president Prince Norodom Ranariddh.[2] In 2008, he was appointed as the President of the Norodom Ranariddh Party.[3]