The Big Cube is a 1969 American thriller film directed by Tito Davison and starring Lana Turner, Karin Mossberg, George Chakiris, Daniel O'Herlihy and Richard Egan; it was one of Lana Turner's last movies. It is notable for its aggressive portrayal of LSD use and the 1960s youth counterculture as vicious evils.
The Big Cube was not a successful movie.