Si Votha
| Si Votha | |
|---|---|
| Born | 1841 Cambodia | 
| Died | 31 December 1891 Cambodia, French Indochina | 
| Father | Ang Duong | 
| Religion | Theravada Buddhism | 
Si Votha (Khmer: ស៊ីវត្ថា; also spelled Si Vattha; c. 1841 – 31 December 1891) was a Cambodian prince who was briefly a contender for the throne. He spent his entire life fighting his half brother King Norodom for the throne.
Si Votha was a grandson of King Ang Eng (reigning from 1772 to 1796) and a son of King Ang Duong. His biographical notes only record that he had a daughter named Neak Ang Mechas (Princess) Ang Duong Rath Votha. Si Votha had two half-brothers, Norodom and Sisowath of Cambodia, with Norodom being the king's chosen heir.