The Kodiak Archipelago (Russian: Кадьякский архипелаг, romanized: Kad'yakskiy arkhipelag) is an archipelago (group of islands) south of the main land-mass of the state of Alaska (United States), about 405 km (252 mi) by air south-west of Anchorage in the Gulf of Alaska. The largest island in the archipelago is Kodiak Island, the second-largest island in the United States. The archipelago has a length of about 285 km (177 mi) and a width of about 108 km (67 mi), from the Barren Islands on the north to Chirikof Island and the Semidi Islands group on the south. The archipelago contains 13,890 km² (5,360 sq mi) of land. The Kodiak Archipelago contains about 40 small glaciers, numerous streams and many species of land and marine animals. Much of its land is forested.

The Kodiak Island Borough includes all of the Kodiak Archipelago and some lands on the mainland. The Kodiak National Wildlife Refuge encompasses a large percentage of the land in the archipelago.