The Lonely Violent Beach () is a 1971 crime thriller film directed by Ernesto Gastaldi and starring Robert Hoffmann, Mara Maryl and Riccardo Salvino.
A couple in a troubled marriage drives to a house by the sea, however the couple soon attracts the attention of a nearby motorcycle gang who proceeds to target them.
The film was shot in 25 days.
The German site ItaloCinema gave the film 8 stars out of 10. The film is noted for its problematic ending.