Chenega Glacier, Tidewater glacier in Prince William Sound, Alaska, US

Chenega Glacier is a 19-kilometre tidewater glacier that begins in the Sargent Icefield on the Kenai Peninsula and descends to Nassau Fjord in Prince William Sound, ending about 18 kilometres from the community of Chenega. Its terminus reaches the sea, where ice breaks away into the fjord.

In 1905 the United States Geological Survey named the glacier after Chenega Island and the nearby community of Chenega Bay. The name thus ties the ice to a settlement in Prince William Sound rather than to an explorer or a surveyor. The glacier later gave its name to the fast ferry MV Chenega of the Alaska Marine Highway.

The Alaska Marine Highway System commemorated this natural formation by naming their ferry MV Chenega after the glacier.

The glacier meets the sea at Nassau Fjord, about 18 km from Chenega. Most expeditions start from Whittier in Prince William Sound. Kayakers and small cruise ships are the usual means of approach; the ice front is viewed from the water.

Chenega Glacier is the namesake of the MV Chenega, a fast ferry of the Alaska Marine Highway. The glacier itself was named in 1905 after Chenega Island and the nearby community of Chenega Bay, not after the ferry, which came much later.