The Alutiiq language (also called Sugpiak, Sugpiaq, Sugcestun, Suk, Supik, Pacific Gulf Yupik, Gulf Yupik, Koniag-Chugach) is a close relative to the Central Alaskan Yup'ik language spoken in the western and southwestern Alaska, but is considered a distinct language. It has two major dialects:

• Koniag Alutiiq: spoken on the upper part of the Alaska Peninsula and on Kodiak Island; was also spoken on  Afognak Island before it was deserted in the wake of the 1964 Good Friday earthquake.
• Chugach Alutiiq: spoken on the Kenai Peninsula and in Prince William Sound.