Boneswarms are a malevolent kind of undead found in the Iron Kingdoms RPG miniature table-top game, which is set in the same world as the battle-based Hordes game.

A greater evil is sometimes born in the places where many have met an evil end, animating their remains in a swarm of bone. This malignant force's singular intent is to slay the living and grow ever larger, like a cancer made of hate. Only the most stalwart of heroes can hope to defeat such an undead abomination, for those who fail only make it more powerful.