Pathum Wan is one of the 50 districts (khet) of Bangkok, Thailand. The district is bounded by seven other districts (from north clockwise): Ratchathewi (across the Khlong Saen Saep canal), Watthana, Khlong Toei, Sathon, Bang Rak, Pom Prap Sattru Phai (across the Khlong Phadung Krung Kasem canal), and Dusit.
The district was established in 1914. It is named after a Buddhist temple Wat Pathum Wanaram (literally meaning 'lotus forest temple') and the nearby Sa Pathum Palace (meaning 'lotus pond palace'). Both were built on the order of King Mongkut (Rama IV) and given their names due to an abundance of lotus in Khlong Saen Saep during his reign.