Michael Thomas O'Connell (born November 25, 1955) is an American former professional ice hockey player and general manager who currently serves as the Director of Pro Development for the Los Angeles Kings.

He moved to the Ontario Major Junior Hockey League's Kingston Canadians as a teenager, following the recommendation of Boston Bruins General Manager Harry Sinden and was promptly named best OMJHL defenceman in 1974–75.

He became the first Chicago native to play for the Black Hawks in 1978, but most of his career was spent in his adopted home state of Massachusetts with the Boston Bruins, who obtained him in a trade for Al Secord in 1980.

In 2005, O'Connell traded Bruins star center Joe Thornton to the San Jose Sharks, receiving Brad Stuart, Marco Sturm and Wayne Primeau in exchange.

Many important players on the Bruins roster were drafted during O'Connell's tenure as general manager, including Patrice Bergeron and David Krejčí, centerpieces of the team's Stanley Cup victory in 2011.