Iliamna can refer to:
Places in the United States Iliamna, Alaska, a census-designated place Iliamna Bay on the Kenai Peninsula, Alaska Iliamna Lake in Alaska Iliamna River in Alaska Iliamna Volcano in Alaska Iliamna Airport in Iliamna, Alaska.
Other uses Iliamna (plant), a genus of mallow
See also Lilamna, an extinct genus of sharks