激龙属（学名：Irritator）是兽脚亚目棘龙科下的一属恐龙，生存于下白垩纪的巴西，约1亿1千万年前。激龙是种双足、大型的肉食性恐龙，身长估计约有8公尺，背部高度为3公尺，体重估计约2到3公吨。激龙的颌部与牙齿型态类似现代鳄鱼，头顶则有个形状独特的头冠。激龙是棘龙、似鳄龙的近亲，这群动物可能以鱼类为食。

激龙的唯一化石是一个长80公分的头颅骨，发现于巴西桑塔那组，只缺少上下颌前段。在桑塔那组还发现另一种棘龙科的化石，被命名为崇高龙，化石只有上下颌前段。由于激龙与崇高龙的化石发现于相同年代的同一地层，目前有许多科学家认为崇高龙是激龙的异名；甚至有科学家提出，这两个物种的化石，其实来自于同一个体。

For other meanings see irritation and wikt:irritate.

Irritator is a genus of spinosaurid dinosaur that lived in the early Cretaceous Period (Albian stage), around 110 million years ago. Current estimations indicate a length of 8 meters (26 feet). In 2010, Gregory S. Paul gave lower estimations of 7.5 metres and one tonne. It was found in Brazil. Irritator was a theropod with an unusually shaped crest at the rear of its head, and most likely consumed fish.