红嘴巨鸥（学名：Hydroprogne caspia）为鸥科巨鸥属的鸟类。该物种的模式产地在里海。

• 红嘴巨鸥指名亚种（学名：Hydroprogne caspia caspia）。在中国大陆，分布于**、辽宁、山东、河北、江苏、江西、福建、广东、海南等地。该物种的模式产地在里海。

The Caspian tern (Hydroprogne caspia, formerly Sterna caspia) is a species of tern, with a subcosmopolitan but scattered distribution. Despite its extensive range, it is monotypic of its genus, and has no subspecies accepted either. In New Zealand it is also known by the Maori name taranui.