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 did not do well in the cinema.