Sean Sullivan (born May 4, 1955 in Thorold, Ontario) is a Canadian defenceman who played for the Hamilton Fincups. He played Tier II Junior "A" for the Welland Sabres from 1972 to 1974. From 1974 to 1976 he played for the Fincups and won the Memorial Cup in 1976. The Los Angeles Kings chose him 157th overall in the 1975 NHL Amateur Draft but he never played any pro hockey.