 Andrew Armas (F) | 2006-05-16 | 2025 | Long Beach Bombers | USPHL Premier |  |
| Mario Armata (F) | 2007-08-19 | 2025 | Northeast Metro Tech | USHS-MA | |
 Joni Arminen (G) | 1995-07-02 | 2018 | Bruins | III-divisioona | |
| Juho Arminen (LW) | 1998-11-18 | 2026 | TuS Harsefeld |  Germany4 | |
 Liam Armit (RW) | 2009-01-14 | 2026 | Baie-Comeau Drakkar | QMJHL | |
| Blake Armitage (D) | 2004-01-30 | 2026 | Smiths Falls Rideaus | NPHL | |
| Ryan Armitage (LW) | 2006-01-31 | 2026 | Timmins Rock | NOJHL | |
| Connor Armour (C) | 1994-04-21 | 2019 | Adrian College | NCAA III | |
| Nicholas Armour (D) | 2011-00-00 | 2026 | Florida Alliance 14U AAA | T1EHL 14U | |
| Allen Armstrong (F) | | 2026 | Amherst Knights 18U AAA | BEAST 18U | |
| Bryce Armstrong (G) | 2012-07-24 | 2026 | Okanagan HA Colorado 13U AAA | 13U AAA | |
| Cameron Armstrong (G) | 2010-09-00 | 2026 | Danbury Jr. Hat Tricks 15U AAA | 15U AAA | |
| Charlie Armstrong (F) | 1999-08-10 | 2019 | Almonte Inferno | NCJHL | |
| Christian Armstrong (RW) | 2008-01-20 | 2026 | Oakville Blades | OJHL | |
| Colton Armstrong (F) | 2011-00-00 | 2026 | Pittsburgh Vengeance 14U AAA | 14U AAA | |
| Cooper Armstrong (F) | 2011-07-22 | 2026 | Cariboo Cougars U15 AAA | BCEHL U15 | |
| Cruise Armstrong (C/RW) | 2010-06-18 | 2026 | Mount St. Charles Acad 15U AAA | NEPACK 15U | |
| Daniel Armstrong (D) | 2009-08-17 | 2025 | Saugerties Mustangs 16U A | AHF 16U | |
| Easton Armstrong (F) | 2010-05-28 | 2026 | Calgary Edge School U17 AAA | CSSHL U17 AAA | |
| Foster Armstrong (F) | 2009-01-21 | 2026 | Pacific Coast Academy U17 Prep | CSSHL U17 | |
| Jacob Armstrong (G) | 2006-08-23 | 2026 | Nelson Leafs | KIJHL | |
| Jason Armstrong (C) | 1991-06-07 | 2012 | Leaside Kings U21 AAA | GTHL U21 | |
| Jordan Armstrong (G) | 2006-03-13 | 2026 | North Winnipeg Satelites | CRJHL | |
| Kaden Armstrong (D) | 2006-09-07 | 2026 | Thunder Hockey Club | NCDC | |
| Lucas Armstrong (D) | 2010-09-18 | 2026 | Calgary Bulls U17 AAA | AEHL U17 | |
| Matt Armstrong (LW) | 1982-08-09 | 2024 | Melbourne Mustangs |  AIHL | |
| Oakley Armstrong (G) | 2006-03-25 | 2026 | Casper Warbirds | NCDC | |
| Rafe Armstrong (F/D) | 2007-03-20 | 2026 | Potomac Patriots | USPHL Premier | |
| Riley Armstrong (C/RW) | 1984-11-08 | 2016 | Reading Royals |  ECHL | |
| Rob Armstrong (D) | 1973-02-10 | 1998 | Mount Allison Univ. | USports | |
| William Armstrong (F) | 2007-06-22 | 2025 | Burlington Cougars | OJHL | |
| Derek Army (C/RW) | 1991-04-10 | 2018 | Wheeling Nailers | ECHL | |
| River Arnason (F) | 2008-01-03 | 2027 | Kamloops Blazers | WHL | |
 Timothé Arnaud (F) | 2013-02-11 | 2026 | Vorarlberg Pro Hockey U13 |  WHC U13 | |
 Oliver Arnberg (RW) | 1996-07-19 | 2026 | Nynäshamns IF | Division 3 | |
| Olle Arnberg (D) | 2010-10-29 | 2027 | Strömsbro IF U18 | U18 Region | |
| Sean Arnberger (RW/D) | 2005-06-09 | 2026 | Connecticut Jr. Rangers | USPHL Elite | |
| Easton Arndt (F) | 2010-01-04 | 2026 | HC Edmonton 18U | JPHL 18U | |
| Leo Arndt (D) | 2011-04-28 | 2026 | EHC Wolfsburg U17 | Germany U17 2 | |
| Maddie Arndt (G) | 2012-05-20 | 2026 | Team Illinois 14U AAA | 14U AAA (W) | |
| Robin Arndt (G) | 1990-04-29 | 2023 | Amsterdam Tigers |  Netherlands2 | |
| Theo Arnells (G) | 2009-08-14 | 2026 | Njurunda SK U18 | U18 Div.1 | |
| Marius Per Arnesen (C) | 2006-02-23 | 2026 | Syracuse Lightning | USPHL Premier | |
| Bryan Arneson (F) | 1993-05-24 | 2021 | Huntsville Havoc | SPHL | |
| Easton Arneson (D) | 2010-00-00 | 2025 | MN Loons 14U AA Black | MNHP 14U II | |
| Linus Arnesson (D) | 1994-09-21 | 2027 | Örebro HK | SHL | |
 Linus Johan Eidsa Arnestad (F) | 2010-10-07 | 2026 | Lillehammer U18 | Norway U18 | |
| Turner Arnett (LW) | 2002-08-24 | 2022 | Vaudreuil-Dorion Mustangs | LHMJAA | |
| Jacob Arnfinson (F) | 2010-05-16 | 2025 | Calgary Flames U15 AAA | AEHL U15 | |
| Jan Arngold (F) | 2007-02-06 | 2026 | SG Rostock/Timmendorf U20 | Germany U20 4 | |
 Aevar Arngrimsson (RW) | 2003-08-07 | 2026 | Skautafélag Reykjavikur | Iceland | |
 Gustavs Arnis (G) | 2008-03-14 | 2026 | Frisk Asker | Norway | |
| Nils Arnlöf (F) | 2010-04-26 | 2027 | Örnsköldsvik HF U18 | U18 Div.1 | |
| Anthony Arnold (D) | 2012-02-10 | 2026 | MLAC U15 AAA | AEHL U15 | |
| Camden Arnold (F) | 2009-04-29 | 2026 | Blenheim Blades | PJCHL | |
| Carter Arnold (G) | 2007-08-30 | 2026 | Espanola Paper Kings | NOJHL | |
| Cody Arnold (G) | 2006-02-03 | 2026 | Prince George Spruce Kings | BCHL | |
| Ethan Arnold (D) | 2010-04-13 | 2026 | ES Lions U16 | PHL U16 | |
| Gavin Arnold (G) | 2007-12-03 | 2026 | Christian Brothers College High | USHS-MO | |
| Jack Arnold (F) | 2011-11-01 | 2026 | Dallas Stars Elite 14U AAA | 14U AAA | |
| Jaden Arnold (LW) | 2006-10-20 | 2024 | Komoka Kings | GOJHL | |
| Justin Arnold (F) | 2000-05-24 | 2026 | County Royals | NPHL | |
| Lucas Arnold (D) | 2008-07-13 | 2026 | Valley Jr. Warriors | EHL | |
| Mason Arnold (F) | 2009-01-13 | 2026 | NY Dynamo 16U AAA | 16U AAA | |
| Owen Arnold (D) | 2003-11-12 | 2026 | SUNY-Fredonia | NCAA III | |
| Wyatt Arnold (F) | 2009-00-00 | 2024 | Reedsburg/Wisconsin Dells | USHS-WI | |
| Lukas Arnolt (D) | 2008-09-26 | 2026 | King's-Edgehill School U18 | U18 AAA | |
| Anthony Arnone (F) | 2012-00-00 | 2026 | Washington Little Caps 13U AAA | T1EHL 13U | |
| Vincent Arnone (F) | 2009-06-18 | 2026 | Oakland Jr. Grizzlies 16U AAA | 16U AAA | |
| Ian Arnott (G) | 2006-01-07 | 2026 | New Hampshire Avalanche | EHL | |
| Quinn Arnott (F/D) | 2002-10-28 | 2025 | County Royals | OSHL | |
| Eskil Arnström (G) | 2010-10-12 | 2026 | Lions HC | Division 3 | |
| Liam Arnström (G) | 2007-08-26 | 2027 | Viking HC U20 | U20 Div.1 | |
| Stormer Arntsen (G) | 2008-00-00 | 2026 | Tromsø IK U16 | Norway U16 2 | |
| Atte Aro (LW) | 2009-02-08 | 2027 | Linden Hockey U18 | U18 Div.1 | |
| Luukas Aro (D) | 2008-01-02 | 2026 | Hermes U18 | U18 Suomi-sarja | |
 Heikki Arola (D) | 2012-04-11 | 2025 | Team Kirk U13 | EIH Showcase U13 | |
| Josia Arola (F) | 2008-08-20 | 2026 | EHC Neuwied U20 | Germany U20 4 | |
| David Aron (F) | 2008-04-19 | 2026 | Palm Beach Typhoon | USPHL Elite | |
 Toren Aronoff (D) | 1995-06-27 | 2026 | Jerusalem Lions | Israel | |
| Artjom Aronov (F) | 2007-03-16 | 2026 | EHC Basel U21 |  Swiss U21-Top | |
| Micah Aronson (F) | 2011-00-00 | 2026 | Toronto Jr. Canadiens U15 AAA | GTHL U15 | |
| Alfred Aronsson (G) | 2008-12-07 | 2027 | Vänersborgs HC U20 | U20 Div.1 | |
| Kevin Aronsson (G) | 2008-07-04 | 2026 | HC Lidköping | Division 2 | |
| Oskar Aronsson (G) | 2006-11-01 | 2026 | IFK Salem | Division 4 | |
| Tommy Aronsson (RW) | 1993-11-18 | 2018 | Lysekils HK | Division 3 | |
| Santeri Arousva (D) | 1993-03-09 | 2026 | Kiekko 49 | III-divisioona | |
| Ursin Arpagaus (F) | 2007-01-29 | 2026 | EHC Lenzerheide-Valbella | SwissDiv2 | |
| Hugo Arps (F) | 2009-08-18 | 2026 | Sydney Bears | AIHL | |
 Samuel Arraiza-Recalde (F) | 2004-04-02 | 2026 | CHH. Necso Txuri Urdin | Spain | |
| Quinn Arras (D) | 2008-05-21 | 2026 | ESV 03 Chemnitz U20 | DNL U20 2 | |
| Kévin Arrault (F) | 1983-04-11 | 2014 | Cergy-Pontoise II | France4 | |
| Svante Arrhagen (D) | 2010-05-31 | 2027 | Malmö Redhawks U18 | U18 Region | |
 Matteo Arriaga (D) | 2009-08-29 | 2026 | CIHA Voyageurs U18 Prep | CSSHLE U18 | |
| Nicholas Arrington (F) | 2006-01-23 | 2026 | Odessa Jackalopes | NAHL | |
| Joshua Arrobas (F) | 2004-07-27 | 2025 | Elmira Impact | USPHL Premier | |
| Blake Arrowsmith (RW) | 2007-04-17 | 2026 | Soo Greyhounds | OHL | |
| Jonathan Arruda (F/D) | 2006-05-11 | 2026 | Tulsa Jr. Oilers | NA3HL | |
| Keira Arscott (D) | 2008-03-07 | 2026 | Cornwall Lady Royals U18 AA | OWHL U18 AA (W) | |
| Chad Arsenault (G) | 2002-02-07 | 2023 | Summerside Western Capitals | MJAHL | |
