Fujimori was born on 28 July 1938, in Miraflores, a district of Lima. His parents, Naoichi Fujimori (original surname Minami, adopted by a childless relative; 1897–1971) and Mutsue Inomoto Fujimori (1913–2009), were natives of Kumamoto, Japan, who immigrated to Peru in 1934. He holds dual Peruvian and Japanese citizenship, his parents having secured the latter through the Japanese Consulate. He has three other siblings. Fujimori’s place of birth continues to be a topic of debate. While some sources claim that he was born in Peru, few others say that Japan is his birthplace.
Fujimori's parents were Buddhists.