Lat Bua Luang (Thai: ลาดบัวหลวง, pronounced [lâːt būa̯ lǔa̯ŋ]) is a district (amphoe) in the southern part of Ayutthaya province, central Thailand.

Tambon Lat Bua Luang was separated from Amphoe Bang Sai and officially upgraded to a district in 1947.

Neighbouring districts are (from the north clockwise) Bang Sai (บางซ้าย), Sena, and Bang Sai (บางไทร) of Ayutthaya Province, Sam Khok and Lat Lum Kaeo of Pathum Thani province, Sai Noi of Nonthaburi province, Bang Len of Nakhon Pathom province, and Song Phi Nong of Suphanburi province.

Lat Bua Luang is a township (thesaban tambon) covering parts of the tambon Lat Bua Luang.

This Ayutthaya Province location article is a stub.