Planet Harriers (Japanese: プラネットハリアーズ, Hepburn: Puranetto Hariāzu) is a 3D rail shooter arcade video game published by Sega, developed by its Amusement Vision division.

Control is through a joystick with a missile and bullet trigger, and view-change and bomb buttons on the main panel.

The character flies from an into-the-screen perspective, shooting oncoming enemies and missiles.

In a two player game, the two characters may dock together in order to recover life.

In September 2000, IGN described Planet Harrier, running on the Sega Hikaru arcade system board, as "the unrivaled champion of videogame graphics ... there's never been as visually impressive a videogame as this", praising the long draw distance, "clean and crisp" image quality, speed of movement, large number of fast-moving objects, and "amazing" graphical style.