M2950 Harpoon nuclear missile

The Harpoon nuclear missile was to be a United Nations Space Command starship-mounted thermonuclear weapon. It is mentioned in a piece of concept art for the UNSC corvette Andraste that Isaac Hannaford designed for Halo 3, though it was not featured in the game.

What appear to be Harpoon missile tubes appear in Halo: Reach on the Paris-class heavy frigate, UNSC Pillar of Autumn and Anchor 9, though they never function in-game.

It shares its name with a modern-day anti-ship missile.