海峡群岛（英语：Channel Islands）是美国加州南部外海的八座岛屿。这八座岛屿隔着圣巴巴拉海峡与美国本土相望。其中五座岛屿属于海峡群岛国家公园所管辖。这八座岛屿可分为北海峡郡岛：圣米格尔岛、圣罗莎岛、圣克鲁兹岛、安那卡帕岛，和南海峡郡岛：圣巴巴拉岛、圣尼古拉斯岛、圣卡塔利娜岛以及圣克莱门特岛。

这八岛分别属于三个县：

The Channel Islands of California are a chain of eight islands located in the Pacific Ocean off the coast of Southern California along the Santa Barbara Channel in the United States of America. Five of the islands are part of Channel Islands National Park, and the waters surrounding these islands make up Channel Islands National Marine Sanctuary. The islands were first colonized by the Chumash and Tongva Native Americans 13,000 years ago, who were then displaced by European settlers who used the islands for fishing and agriculture. The U.S. military uses the islands as training grounds, weapons test sites, and as a strategic defensive location. The Channel Islands and the surrounding waters house a diverse ecosystem with many endemic species and subspecies.