The Yupʼik or Yupiaq and Yupiit or Yupiat (pl), also Central Alaskan Yupʼik, Central Yupʼik, Alaskan Yupʼik, are an Indigenous people of western and southwestern Alaska ranging from southern Norton Sound southwards along the coast of the Bering Sea on the Yukon-Kuskokwim Delta and along the northern coast of Bristol Bay as far east as Nushagak Bay and the northern Alaska Peninsula at Naknek River and Egegik Bay. They are also known as Cupʼik by the Chevak Cupʼik dialect-speaking people of Chevak and Cupʼig for the Nunivak Cupʼig dialect-speaking people of Nunivak Island.

The Yupik are a group of Indigenous or Aboriginal peoples of western, southwestern, and southcentral Alaska and the Russian Far East. They are related to the Inuit and Iñupiat. Yupik peoples include the following:Alutiiq, or Sugpiaq, of the Alaska Peninsula and coastal and island areas of southcentral Alaska. Yupʼik or Central Alaskan Yupʼik of the Yukon–Kuskokwim Delta, the Kuskokwim River, and along the northern coast of Bristol Bay as far east as Nushagak Bay and the northern Alaska Peninsula at Naknek River and Egegik Bay in Alaska. Siberian Yupik, including Naukan, Chaplino, and—in a linguistic capacity—the Sirenik of the Russian Far East and St. Lawrence Island in western Alaska.