John Alexander Tonelli (born March 23, 1957[2]) is a Canadian former professional ice hockey forward from Milton, Ontario.

He was a four-time Stanley Cup champion with the New York Islanders, and also played with the Calgary Flames, Los Angeles Kings, Chicago Blackhawks, and the Quebec Nordiques of the National Hockey League.

[4] As young man, Tonelli worked in Sclisizzi's bronze-plaque making factory where he washed the finished plaques.

[13] Tonelli was one of the first players to challenge the Ontario Hockey Association and the Marlies OHA team, with which he had signed a contract at age 16.

Up until 1977, Tonelli often suffered once or twice a year from devastating migraine headaches that started age 10 and that doctors said were caused by his intensity and nervousness at game time.

[19] Tonelli's NHL rights were reclaimed by NY Islanders after the Houston WHA franchise folded in July 1978.

On May 24, 1980, Tonelli had the assist on Bob Nystrom's overtime Stanley Cup-winning goal against the Philadelphia Flyers, giving the Islanders their first of four straight Cups.

During the playoffs that year, The Islanders were five minutes away from being eliminated by a much weaker Pittsburgh Penguin team, trailing 3-1 in the deciding game.

For an encore, it was John Tonelli that scored in overtime to win the game for the Islanders, thus extending their long reign as Stanley Cup champions.

Tonelli also scored the winning goal in a February 20, 1982 game against the Colorado Rockies, beating former teammate Chico Resch with just 47 seconds to play to allow the Islanders to set an NHL record (since broken) with their 15th consecutive victory.

In his seventh season as a professional and his fourth with the Islanders, he scored 35 goals and 58 assists for 93 points, breaking Clark Gillies's club record for a left wing, 91, set in 1978-79.

During fall 1985, Tonelli was a holdout and missed 22 days of training camp and the early regular season in a bitter standoff with the Islanders.

[5] After returning to the Islanders and playing out most of the season, he was traded to the Calgary Flames on March 11, 1986, for Richard Kromm and Steve Konroyd.

As a free agent, Tonelli was offered a termination contract by the Flames after they benched him during some playoff games in 1988, but he instead signed for the 1988–89 season with the Los Angeles Kings, where he was put on a line with Wayne Gretzky at times.

He retains a kind of laziness he's long had, in that he won't backcheck as well as he should, sort of coasting back to save his energy for another offensive rush.

In 2021 it was announced that the sports centre had secured investment from the Government of Canada and from the town of Milton to upgrade and make improvements to the skating rink as well as to spectator facilities and access.