The Utukok River (Iñupiaq: Utuqqaq) is a 225-mile (362 km) long stream in the North Slope Borough of the U.S. state of Alaska.

[3] It rises in the De Long Mountains at the confluence of Kogruk and Tupik creeks and flows north, northeast, and then northwest.

[1] It empties into Kasegaluk Lagoon on the Chukchi Sea of the Arctic Ocean, 20 miles (32 km) southwest of Icy Cape.

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