Samut Prakan (Thai: สมุทรปราการ [sāmùt prāːkāːn] ( listen)) 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 as from March 9, 1946.

It is part of the Bangkok Metropolitan Region. Neighboring provinces are Bangkok, to the north and west, and Chachoengsao to the east.

Suvarnabhumi Airport (or also called New Bangkok International Airport) is located in the Bang Phli district of Samut Prakan province.