Michael J. Reilly Jr. (born July 13, 1993) is an American professional ice hockey defenseman for the New York Islanders of the National Hockey League (NHL). He was originally selected by the Columbus Blue Jackets in the fourth round (98th overall) of the 2011 NHL Entry Draft and previously played in the NHL for the Minnesota Wild, Montreal Canadiens, Ottawa Senators, Boston Bruins and Florida Panthers.
| Position | Defenseman/Défenseur |
| International Hockey |  United StatesWorld Junior Championships (2013  )World Championships (2015  ) |
| Club Hockey | Academy of Holy Angels – Minnesota High School League (US High School) Shattuck-Saint Mary’s – MHSL Penticton Vees – British Columbia Hockey League (Canadian Junior A) University of Minnesota Gophers – Western Collegiate Hockey Association (NCAA Division I) Iowa Wild – American Hockey League Minnesota Wild – National Hockey League Montreal Canadiens – National Hockey League Ottawa Senators – National Hockey League Boston Bruins – National Hockey League Providence Bruins – American Hockey League Florida Panthers – National Hockey League New York Islanders – National Hockey League |
| Awards and Honors | Big 10 Defensive Player of the year (2013-14 & 2014-15) All-Big Ten First Team (2013-14 & 2014-15) AHCA West First-Team All-American (2013-14 & 2014-15) |
Career Statistics
Transactions
| 2015-07-01 | Signed as a Free Agent with the Minnesota Wild. |
| 2018-02-26 | Traded by the Minnesota Wild to the Montreal Canadiens for 5th round draft pick in 2019 . |
| 2020-01-03 | Traded by the Montreal Canadiens to the Ottawa Senators for Andrew Sturtz and 5th round draft pick in 2021 (Jack Bar). |
| 2021-04-11 | Traded by the Ottawa Senators to the Boston Bruins for 3rd round draft pick in 2022 . |
| 2023-07-01 | Released by the Boston Bruins. |
| 2023-07-01 | Signed as a Free Agent with the Florida Panthers. (one-year contract) |
| 2023-11-25 | Selected off waivers by the New York Islanders from the Florida Panthers. |
