Wat Botum (Khmer: វត្តបុទម, lit. Temple of the Lotus Blossoms), the official name is Wat Botum Wattey Reacheveraram (Khmer: វត្តបុទមវត្តីរាជវរារាម) literally means The temple of lotus which is built by the king, is a wat (pagoda) located on Oknha Suor Srun Street 7, Sangkat Chaktomuk, Khan Daun Penh, Phnom Penh, Cambodia. It is to the south of the Royal Palace on the western side of Wat Botum Park.
Established by King Ponhea Yat in 1442, Wat Botum is one of the most important and original pagodas in Phnom Penh. The wat was originally named Wat Khpop Ta Yang or Wat Tayawng and at the time of the construction of the Royal Palace in the 1860s, when it was assigned to the Cambodian branch of the Dhammayuttika Nikaya, it was renamed Botum Wathei by monk Kantie Topodae after a former lotus pond on the site. Numerous politician and eminent persons of the city are buried here. Also, many prominent Cambodian bhikkhus have been ordained at the wat. You Bo and the Khmer Writers' Association have their headquarters at the wat.