| Sourn Serey Ratha | |
| Term Start: | March 18, 2010 |
| Term End: | September 7, 2017 |
| Predecessor: | Position established |
| Successor: | Soung Sophorn |
| Birth Date: | 7 September 1973 |
| Birth Place: | Battambang, Cambodia |
| Party: | Khmer Power Party |
Sourn Serey Ratha (km|សួន សេរីរដ្ឋា; born September 7, 1973) is a Cambodian American republican politician, and the founder and President of the Khmer Power Party (KPP).[1]
He was convicted of inciting military personnel disobedience and demoralising the army based on a message he posted on Facebook urging the Royal Cambodian Armed Forces to resist orders from their leaders. He was sentenced to five years in prison but was granted a royal pardon by King Norodom Sihamoni after serving just over a year.[2] He was also fined $2,500.[3]