The Bangkok Metropolitan Administration (BMA) is the local government of Bangkok, which includes the capital of the Kingdom of Thailand. The government is composed of two branches: the executive and the legislative. The administration's roles are to formulate and implement policies to manage Bangkok. Its purview includes transport services, urban planning, waste management, housing, roads and highways, security services, and the environment.

Bangkok, officially known in Thai as Krung Thep Maha Nakhon and colloquially as Krung Thep, is the capital and most populous city of Thailand. The city occupies 1,568.7 square kilometres (605.7 sq mi) in the Chao Phraya River delta in central Thailand and has an estimated population of 9.0 million as of 2021, 13% of the country's population. Over 17.4 million people (25%) lived within the surrounding Bangkok Metropolitan Region at the 2021 estimate, making Bangkok an extreme primate city, dwarfing Thailand's other urban centres in both size and importance to the national economy.