A red triangle is used as a symbol with several meanings.
Red triangle or Red Triangle may also refer to:
Red Triangle (Pacific Ocean), the colloquial name of a region off the coast of northern California, US Red triangle slug, a species of land slug from Australia Red Triangle, the parent company of the Alvis Car and Engineering Company , in St. Petersburg, Russia
See also Red Triangle Gang, a fictional entity in the film Batman Returns Pyramid Head, or Red Pyramid Thing, a fictional character from the Silent Hill horror video game series