The Egegik River (pronounced locally, I-ga-gik; Central Alaskan Yup'ik, Igyagiiq; translation, "swift")[3] is a waterway in the U.S. state of Alaska.

A biological survey was conducted at the base of the Alaska Peninsula in 1902 by Wilfred Hudson Osgood, which included the Egegik River.

[4] The river has been known by other names and spellings: Ougagouk (1828); Ugaguk (obsolete except on Government maps) or Igagik (Russian variations); also variously Agouyak, lgiagik.

The King Salmon River, which drains the area between Becharof and Naknek lakes, is the principal tributary to the Egegik from the north.

[8] At low water, a large part of the river bed is exposed with shoals, banks, and narrow, winding channels.

In 1899, the Alaska Packers Association, under the name of the Egegak Packing Company, began construction of a cannery on the left bank opposite and a little above the salting station; it was finished in 1900.