Nydus may refer to:
- Nydus canal: A zerg structure from StarCraft
- Nydus network: A zerg structure from StarCraft II
- Nydus worm: A zerg structure from StarCraft II, produced from the network.
- Nydus network (Char), a system of nydus worms in a cavern underneath the surface of Char.
- Nydus destroyer, a unit in the beta files of StarCraft II: Heart of the Swarm
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