Gary O'Connor, better known as Gary O', is a Canadian rock singer and songwriter. He is best known for the singles "Pay You Back with Interest" and "All the Young Heroes", which were popular in the early 1980s, and for receiving a Juno Award nomination for Most Promising Male Vocalist at the Juno Awards of 1982. He wrote the 38 Special song, "Back Where You Belong", which reached number 20 on the Billboard Hot 100 charts in 1983.