泰伦虫族（Tyranids，或译作泰兰虫族、异形，常被爱好者简称为Nids）是战棋游戏《战锤40000》里一支虚构的外星种族，得名于人类首次发现他们的泰伦星（Tyran）。泰伦虫族实际上来自银河系以外的地方，他们透过虫巢舰队抵达这里，为的是要寻找可以吞噬的星球，他们能够把吞噬的有机物透过基因融合与生物工程转化成自身种族的一部份。泰伦虫族包含了各种不同的生物，不过都由「虫巢意志」（Hive Mind）统一协调。在泰伦虫族进军路在线的每种生物都会被捕食，因此他们已经对银河系造成相当的威胁。

In the fictional universe of Warhammer 40,000, the Tyranids are a race and a playable army in the tabletop miniatures wargame.

The Tyranids are aliens from outside the galaxy who have come to devour all life, one planet at a time. Though they collectively possess a powerful intelligence, they cannot be reasoned with. Tyranids come in diverse forms, each individual having been engineered to fulfill a specific role. All of their technology is biological, named in the Universe as biomorphs due to their components being alive.