Dusit (Thai: ดุสิต; IPA: [dù.sìt]) is one of the 50 districts (Khet) of Bangkok, Thailand.

The district forms the main administrative centre of the kingdom, as both the National Assembly and royal palace are located in this district, as are several ministries. It is connected to Rattanakosin Island by Ratchadamnoen Avenue (literally, "Royal way for travelling").

Neighbouring districts are, clockwise from north, Bang Sue, Phaya Thai, Ratchathewi, Pathum Wan, Pom Prap Sattru Phai, Phra Nakhon, and across the Chao Phraya, the district of Bang Phlat.