John A. Tonelli (born March 23, 1957 in Milton, Ontario, Canada) was a National Hockey League centre. He played with the New York Islanders, the Calgary Flames, and the Los Angeles Kings. He concluded his career playing briefly for the Chicago Blackhawks and the Quebec Nordiques In 1982 and 1985, Tonelli was a second team All-Star left wing for the Islanders. He played in the Stanley Cup finals in 1980, 1981, 1982, 1983, and 1984 with the Islanders, winning four championships in the process, and made an additional appearance as runner-up in the Cup finals in 1986 with the Flames.