USNS Mizar (MA-48/T-AGOR-11/T-AK-272) was a vessel of the United States Navy. She was named after the star, Mizar. Mizar was built as a small ice-strengthened cargo ship of the Eltanin class on a Maritime Administration type (C1-ME2-13a) hull, by Avondale Marine Ways, Inc. from January 1957. She entered service on March 7, 1958 and served as part of the Military Sea Transportation Service, working around Canada and Greenland, with a single voyage to Antarctica in 1961. She was assigned to Military Sealift Command Pacific in 1975 and underwent another major modification in 1980.