| Suy Sem | |
| Term Start: | 16 July 2004 |
| Term End: | 22 August 2023 |
| Successor: | Keo Rattanak |
| Office2: | Member of Parliament for Pursat |
| Term Start2: | 23 September 2013 |
| Term Start3: | 27 September 2003 |
| Term End3: | 9 October 2008 |
| Majority2: | 93,928 (46.43%) |
| Birth Date: | 25 August 1947 |
| Party: | Cambodian People's Party |
| Spouse: | Chea Kheng |
Suy Sem (km|ស៊ុយ សែម; born 25 August 1947) is a Cambodian politician and Minister of Mines and Energy. He is a member of the Cambodian People's Party and was elected to represent Pursat Province in the National Assembly of Cambodia in 2003.[1] He was reinstated as the Minister of Mines and Energy after the general elections in 2013.[2] Before 2013, he served as Minister of Industry, Mines, and Energy which was split into two ministries: Ministry of Mines and Energy, and Ministry of Industry and Handicrafts.