Nakhon Nayok is one of the central provinces of Thailand, established by the Act Establishing Samut Prakan province, Nonthaburi province, Samut Sakhon province, and Nakhon Nayok province , Buddhist Era 2489 (1946), which came into force as of 9 March 1946. Neighboring provinces are (from north clockwise) Saraburi, Nakhon Ratchasima, Prachinburi, Chachoengsao, and Pathum Thani.
Nakhon Nayok is renowned for its refreshing waterfalls and abundant varieties of fruits.