Hoàn Kiếm is an urban district (quận) of Hanoi, the capital city of Vietnam, named after the scenic Hoàn Kiếm Lake.

Hoàn Kiếm District is the downtown and commercial centre of Hanoi. Most of the largest Vietnamese public corporations and bank headquarters are located here, but the central government offices are located in Ba Đình District (sometimes called the French quarter). Many of Hanoi's tourist attractions are located here, including: The Old Quarter, Hanoi Opera House, National Museum of Vietnamese History, and the Thang Long Water Puppet Theatre.

 More information about the Hoan Kiem District can be found on the Hanoi tour Hoan Kiem District Page