George J. Gilmore, 67, a retired official of the General Services Administration, where he had worked in the sales division and Congressional Liason Office, died Saturday at the Washington Hospital Center. He had cancer.

Mr. Gilmore came to Washington in 1956 with GSA's sales division, where he wrote sales manuals and helped coordinate sales of surplus government goods. He was deputy division director before transferring to the Congressional Liason Office, where he worked from 1961-69. He then returned to the sales division for a year before retiring in 1970.

He was a native of Charlestown, Mass., and a resident of Cheverly. Mr. Gilmore attended Boston University. He was an electrical supervisor in the Boston Navy Yard during World War II.

In 1947, he joined a predecessor agency of the GSA, the War Assets Administration, where he worked as a specialist in the disposal of government war surplus electronic equipment to private industry. Mr. Gilmore joined the GSA in 1950 when it absorbed the War Assets Administration and worked in Boston until coming to Washington.

Survivors include his wife, the former Lillian J. Flynn, of Cheverly; a daughter, Joanne Daly, also of Cheverly; two brothers, Thomas, of Middleboro, Mass., and Paul, of Aurora, Colo.; a sister, Dorothy Shea, of Charlestown, Mass.; and two grandchildren.