William Albert Sanger, 57, a retired communications supervisor with the General Services Administration and a former lieutenant commander in Naval Reserves, died Friday at Anne Arundel General Hospital in Annapolis after a heart attack.

Mr. Sanger, who lived in Annapolis, joined the GSA in 1963 as a communications specialist. He later was named director of the requirements division of the agency's Telecommunications and Automated Data Processing Services, a position he held until his retirement in 1979.

A native of Chicago, he joined the Navy during World War II and participated in the Normandy invasion. Following the war, he became a telephone exchange manager with Illinois Bell and remained with the company until 1959.

Mr. Sanger also remained in the Naval Reserves after the war. He was recalled to active duty during the Korean conflict and again in 1959, when he was stationed with the Naval Security Group in Washington. He remained on active duty there until he joined the GSA. In the mid 1960s, he retired from the Naval Reserves with the rank of lieutenant commander.

Mr. Sanger was a member of the Annapolis Yacht Club and was a licensed charter boat captain. In addition, he taught sailing on a volunteer basis for the American Red Cross in Washington.

Survivors include his wife, Priscilla K. of Annapolis, who he married in 1948; two daughters, Donna Carol Sanger, of Columbia, Md., and Diane K. Larrimore of Chestertown, Md; his brother, James A. of Phoenix, Ariz., and 3 grandchildren.