The Speargun is a weapon in the Underwater Weapons class that will be featured in Grand Theft Auto VI.

Confirmed to appear in GTA VI from leaked game footage on September 18, 2022, the speargun is a ranged underwater device designed to shoot a tethered spear or harpoon. Primarily used in sport fishing and underwater target shooting, it allows players to target fish, marine animals, or other submerged objectives.