Daikaiju is a Japanese term meaning "giant strange beast" or "great strange beast".
Daikaiju may also refer to:
Daikaiju (band), an American surf rock band Daikaijū Gamera, a 1965 Japanese kaiju film Daikaijū Monogatari, a 1994 role-playing video game Daikaijū no Gyakushū, a 1986 shoot 'em up arcade game