Pak Kret is a city in Nonthaburi province, Thailand. It lies in the Central Thai plains on the east bank of the lower Chao Phraya River, bordering Bangkok to the east, Mueang Nonthaburi district of Nonthaburi province to the south, and Pathum Thani province to the north. It is part of the Bangkok Metropolitan Region megalopolis. With a registered population of 190,272, Pak Kret is the third most populous city municipality in Thailand.

Nonthaburi is one of the central provinces (changwat) of Thailand, established by the Act Establishing Changwat Samut Prakan, Changwat Nonthaburi, Changwat Samut Sakhon and Changwat Nakhon Nayok, Buddhist Era 2489 (1946), which came into force on 9 May 1946 (Thursday).