 Michal Marcinek | 1995-10-31 | 2025 | HKM Rimavska Sobota U20 | Slovakia U20 2 |  |
 Julian Marcos | 1979-04-26 | 2027 | Français Volants Paris | France3 | |
 Steve Marcotte | 1968-02-25 | 2018 | Collège Laflèche Dragons | QCHL | |
 Anthony Mariani | 1979-01-10 | 2024 | Univ. of Central Florida |  AAU II | |
| Udo Marie | 1989-12-22 | 2026 | Collège du Mont-Ste-Anne M18 D1 | RSEQ M18 D1 | |
 Veli-Pekka Marin | 1974-10-08 | 2024 | TPS | Liiga | |
| Ryan Marinello | | 2027 | MN Green Giants 13U AAA | MNHP 13O | |
| Leah Marino | 2000-07-16 | 2027 | Pittsburgh Penguins Elite 16U | 16U AAA (W) | |
| Tate Maris | 1988-11-18 | 2023 | Omaha Mastery 18U AAA | NAPHL 18U | |
| Veera Marjomaa | 2007-04-24 | 2027 | North Carolina State Univ. | ACHA | |
| Zach Mark | 2000-07-14 | 2026 | New Hamburg Firebirds U18 A | U18 A | |
| Ryan Marker | 1994-02-25 | 2025 | Brooklyn Aviators | USPHL Premier | |
 Johan Marklund | 1973-09-13 | 2025 | Rødovre Mighty Bulls |  Denmark | |
| Albert Markopoulos | 1994-05-30 | 2027 | P.A.L. Junior Islanders 15U AAA | 15U AAA | |
 Djordje Markovic | 1973-02-08 | 2027 | Crvena Zvezda |  IntHL | |
| Helen Markovic | 1999-02-02 | 2023 | Rivier Univ. | NCAA III (W) | |
 Milo Markovic | 1985-10-10 | 2027 | Lindau Islanders | Germany3 | |
| Max Markowitz | 1989-03-01 | 2026 | Tucson Roadrunners | AHL | |
| Luc Marotte | 1967-09-13 | 2027 | Rive-Sud Nordiques | NAPrepHL U18 | |
| Stan Marple | 1968-02-29 | 2027 | Spruce Grove Saints | BCHL | |
| Dan Marr | | 2010 | Atlanta Thrashers | NHL | |
 Jordan Marr | 1991-06-10 | 2026 | Great Britain U18 |  WJC-18 D2A | |
| Renny Marr | 1997-10-08 | 2018 | Okanagan Hockey Academy UK U18 |  England U18 | |
| Daniel Marsalo | 2000-06-28 | 2025 | HPK | Auroraliiga (W) | |
| Anthony Marsella | 1992-04-28 | 2026 | West Chester Univ. | ACHA D2 (W) | |
| Andrew Marshall | 1975-07-07 | 2023 | Melbourne Ice |  AWIHL (W) | |
| Briony Marshall | 1974-01-22 | 2027 | Streatham Storm B |  WNIHL 2 (W) | |
| Joel Marshall | 1979-07-13 | 2026 | Madison Capitols 16U AAA | 16U AAA (W) | |
| Mike Marshall | 1985-08-11 | 2026 | Pueblo Peppers | NAHL | |
| Samantha Marson | 2000-12-06 | 2026 | North York Renegades | GMHL | |
| Andrew Martel | 1994-05-09 | 2026 | SHAW Timberwolves 18U B | 18U B | |
| Benjamin Martel | 2007-03-04 | 2026 | Séminaire St-Joseph M18 D1 | RSEQ M18 D1 | |
| Jason Martin | | 2026 | Pittsburgh Penguins | NHL | |
| Jonathan Martin | 2002-11-21 | 2024 | Valbo HC U16 | U16 Div.1 | |
| Kristoffer Martin | 1979-02-17 | 2027 | Frölunda HC U20 | U20 Nationell | |
| Pier Martin | 1986-03-04 | 2026 | Australia | WC D2A (W) | |
| Sam Martin | 1998-07-08 | 2027 | Northern Michigan Warhounds | MIHL | |
| Kim Martin Hasson | 1986-02-28 | 2027 | Frölunda HC | SDHL (W) | |
 Ondrej Martinka | 1987-05-03 | 2027 | Genève-Servette HC II U15 |  Swiss U16-Top | |
| Tony Martino | 1964-08-13 | 2026 | Winnipeg Jets | NHL | |
| Melwin Martinsson | 2001-09-10 | 2023 | UU Hockey | SUHL | |
 Hunor Marton | 1993-12-03 | 2027 | ESV Kaufbeuren | Germany3 | |
 Tibor Marton | 1979-04-05 | 2027 | MAC Budapest | EWHL (W) | |
| Luca Martschini | 1988-02-27 | 2022 | EHC Sursee U18 | Swiss U18-A | |
| Nathaniel Marx | | 2027 | Drummondville Voltigeurs | QMJHL | |
| Ervin Masek | 1989-11-22 | 2027 | ESC Kempten | Germany4 | |
| Jan Masek | 1997-08-04 | 2025 | Hong Kong | Asian WG (W) | |
| Michael Maslac | 1990-07-22 | 2022 | Újpesti Jégkorong Akadémia U18 | Hungary U18 | |
| Jason Maslakow | 1979-07-25 | 2025 | Collingwood Blues | OJHL | |
| Dante Massaro | 2003-08-29 | 2027 | AHA 16U AAA | 16U AAA | |
| Robert Massimi | 1997-03-21 | 2026 | Morristown Beard School | USHS-NJ | |
| Jensen Massop | 1977-12-24 | 2027 | Vallentuna Hockey | HockeyEttan | |
| Steve Mastalerz | 1992-06-29 | 2026 | Univ. of Massachusetts | NCAA | |
| Lee Masters | 1984-06-20 | 2026 | Rochester Mayo High | USHS-MN | |
 Pablo Mata | 2004-02-06 | 2026 | CH Madrid | Spain | |
| Chris Matchett | 1964-06-09 | 2023 | Long Island Stars | QC Int PW | |
| Kevin Matheja | 1988-03-14 | 2027 | Adendorfer EC | Germany4 | |
| Amelia Matheson | 1986-07-30 | 2026 | Newcastle Northstars | AIHL | |
| Evan Mathias | | 2027 | Brantford Bulldogs | OHL | |
| Juhani Matikainen | 1990-08-21 | 2026 | Varese |  Italy2 | |
 Keisuke Matsuda | 1981-05-12 | 2017 | Japan | Universiade | |
| Dimitri Mattheos | | 2025 | Owen Sound Attack | OHL | |
| Paul Matthews | 1973-06-14 | 2023 | Whitley Warriors | NIHL 1 | |
| Christian Matthys | 1966-12-27 | 2027 | EHC Seewen | MyHL | |
 Jamie Mattie | 1980-06-28 | 2025 | Nova Jr. X Men U15 | NSU15MHL | |
| James Mattson | 2002-08-21 | 2025 | New Jersey Renegades | EHLP | |
 Andrei Matveyev | 1988-07-11 | 2025 | Yunison-Moskva | VHL | |
| Esa Maunula | 1964-06-28 | 2027 | Kölner Haie | DEL | |
| Johnny Mauritzson | 1988-04-30 | 2027 | Kiruna IF | HockeyEttan | |
 Panagiotis Mavridis | 2003-06-30 | 2026 | HK Panda |  CIHL HK | |
| Jeff Maxwell | 1984-12-28 | 2027 | Straubing Tigers | DEL | |
| Kevin Maxwell | 1960-03-30 | 2027 | New York Rangers | NHL | |
| Tyler Maxwell | 1991-04-13 | 2023 | Long Beach Bombers | USPHL Premier | |
| David May | 1980-09-08 | 2025 | Farmington High | USHS-MN | |
| Tyler May | 2003-07-17 | 2026 | Niagara IceDogs | OHL | |
| Sam Mayasich | 1993-03-18 | 2020 | Des Moines Buccaneers | USHL | |
| Chris Mayes | 1987-00-00 | 2026 | Tulsa Oilers | ECHL | |
| Matthew Mayhew | 2000-02-21 | 2026 | Greater Sudbury Cubs | NOJHL | |
 Patrick Mayne | 1992-00-00 | 2025 | Iceland | WC D2B | |
 Linards Mazurs-Mago | 1994-07-21 | 2027 | Liepaja U18 | Latvia U18 | |
| Joseph Mazzie | 1987-10-20 | 2026 | Farmingdale State College | ACHA II | |
| Mark Mazzoleni | 1956-01-25 | 2015 | St. Norbert College | NCAA III | |
| Kristina McAuley | 1991-06-11 | 2026 | Nest Hockey Academy 14U A | 14U A | |
| Pat McAuley | | 2026 | Nest Hockey Academy 15U AAA | 15U AAA | |
| Colin McBride | 1989-00-00 | 2026 | Toronto Maple Leafs | NHL | |
| Patrick McCadden | 1989-02-20 | 2027 | Green Bay Gamblers | USHL | |
| Jake McCall | 2002-12-28 | 2025 | Ironwood Lumberjacks | SIJHL | |
| Chace McCallum | | 2026 | Pittsburgh Penguins | NHL | |
| Keith McCambridge | 1974-02-01 | 2026 | Bakersfield Condors | AHL | |
| Brendan McCann | | 2024 | Groton-Dunstable High | USHS-MA | |
| Scott McCann | 1977-01-18 | 2026 | Vancouver Giants | WHL | |
| David McCarroll | 1986-05-12 | 2026 | Solway IHC | NIHL | |
| James McCarthy | 2000-06-17 | 2027 | Univ. of NC-Charlotte | ACHA II | |
| Marnie McClain | 2005-01-00 | 2026 | Univ. of North Florida | AAU III | |
| Chris McCleary | 1977-04-25 | 2023 | Sudbury Wolves | OHL | |
| Jayne McClelland | 1971-09-20 | 2020 | Great Britain U18 | WJC-18 D1B (W) | |
| Frankie McClendon | 1993-03-14 | 2027 | Danbury Jr. Hat Tricks | NAHL | |
| Alex McConnell | 1991-04-05 | 2027 | Northumberland Stars | GMHL | |
| Andy McConnell | 1992-00-00 | 2025 | Univ. of Kansas | ACHA III | |
| Clark McCormick | 1965-09-14 | 2022 | Skautafélag Akureyrar |  Iceland | |
