A spear gun was a projectile weapon designed for underwater use. The Sedrians from the planet of Sedri used the weapon as their primary armament, and they were available on oceanic planets such as Spira. It was the weapon of choice for Quarren Deep Hunters.
- Battle for the Golden Sun
- Death in the Undercity (As "speargun")
- "The Spira Regatta"—Star Wars Adventure Journal 1
- A Guide to the Star Wars Universe
- Creatures of the Galaxy
- Galladinium's Fantastic Technology (As "speargun")
- Gundark's Fantastic Technology: Personal Gear