Pom Prap Sattru Phai is one of the 50 districts, or khet, located in Bangkok, Thailand. It is situated near several neighboring districts, including Dusit, Pathum Wan, Bang Rak, Samphanthawong, and Phra Nakhon.
The district is characterized by its high population density, exceeding 24,000 inhabitants per square kilometre. This figure makes Pom Prap Sattru Phai the most densely populated district in Thailand.