Speed is a 1994 American action thriller film directed by Jan de Bont in his feature directorial debut, with a screenplay by Graham Yost. The film stars Keanu Reeves, Dennis Hopper, and Sandra Bullock in lead roles, with Joe Morton and Jeff Daniels in supporting roles.

The plot centers around a city bus rigged by a vengeful extortionist (Hopper) to explode if its speed drops below 50 miles per hour (80 km/h). Reeves plays an LAPD officer tasked with preventing the disaster, with Bullock portraying a passenger who becomes unexpectedly involved in the mission.

Speed premiered on June 10, 1994 by 20th Century Fox. The film received positive reviews from critics and grossed $350 million worldwide against a $30-37 million budget, becoming the fifth-highest-grossing film of 1994. At the 67th Academy Awards, Speed won Best Sound Effects Editing and Best Sound. The film also won Best Sound and Best Editing at the 48th British Academy Film Awards.

A sequel, Speed 2: Cruise Control, was released on June 13, 1997, but performed poorly and was critically lambasted, receiving widespread criticism for Reeves' absence and the film's change in setting. It is often cited as one of the worst sequels and action films ever made.