Deutsch 
| Position | Stürmer |
| Nationalität |  |
| Geburtsort | Märsta, SWE |
| Größe | 183 cm |
| Gewicht | 88 kg |
| Geburtsdatum | 08.01.1993 |
| Jugendmannschaft | Arlanda HC |
| Draft | 2011 round 2 #53 overall by Anaheim Ducks |
| Season | Team | League | GP | G | A | TP | PIM | Playoffs | GP | G | A | TP | PIM | |
| 2007-2008 | Wings HC U18 | U18 Region | 5 | 2 | 7 | 9 | 4 | | | ||||||
| 2008-2009 | Uppland | Rikspucken | 9 | 2 | 3 | 5 | 2 | | | ||||||
| Wings HC U18 | U18 Region | 33 | 10 | 18 | 28 | 16 | | | |||||||
| 2009-2010 | Västerås IK U18 | U18 Region | 22 | 10 | 13 | 23 | 33 | | | ||||||
| Västerås IK U18 | U18 Nationell | 17 | 13 | 8 | 21 | 29 | | | |||||||
| Västerås IK U20 | U20 Nationell | 6 | 0 | 1 | 1 | 2 | | | Playoffs | 2 | 0 | 1 | 1 | 0 | |
| 2010-2011 | Västerås IK U18 | U18 Region | 5 | 2 | 4 | 6 | 6 | | | ||||||
| Västerås IK U18 | U18 Nationell | 6 | 3 | 5 | 8 | 4 | | | Playoffs | 6 | 7 | 8 | 15 | 2 | |
| Västerås IK U20 | U20 Nationell | 38 | 20 | 34 | 54 | 45 | | | |||||||
| Västerås IK | HockeyAllsvenskan | 14 | 1 | 3 | 4 | 2 | | | |||||||
| Sweden U18 | WJC-18 | 6 | 2 | 3 | 5 | 6 | | | |||||||
| Sweden U18 (all) | International-Jr | 15 | 2 | 6 | 8 | 60 | | | |||||||
| 2011-2012 | Västerås IK U20 | U20 Nationell | 0 | 0 | 0 | 0 | 0 | | | Playoffs | 5 | 2 | 2 | 4 | 2 |
| Västerås IK | HockeyAllsvenskan | 46 | 12 | 33 | 45 | 6 | | | Qualification | 6 | 1 | 1 | 2 | 0 | |
| Sweden U19 (all) | International-Jr | 7 | 5 | 4 | 9 | 0 | | | |||||||
| Sweden U20 | WJC-20 | 6 | 1 | 1 | 2 | 0 | | | |||||||
| Sweden U20 (all) | International-Jr | 14 | 5 | 8 | 13 | 2 | | | |||||||
| 2012-2013 | HV71 | ET | 6 | 2 | 1 | 3 | 0 | | | ||||||
| HV71 U20 | U20 Nationell | 0 | 0 | 0 | 0 | 0 | | | Playoffs | 2 | 2 | 2 | 4 | 2 | |
| HV71 | SHL | 50 | 4 | 24 | 28 | 12 | | | Playoffs | 5 | 0 | 2 | 2 | 0 | |
| Sweden U20 | WJC-20 | 6 | 0 | 2 | 2 | 2 | | | |||||||
| Sweden U20 (all) | International-Jr | 17 | 8 | 4 | 12 | 4 | | | |||||||
| Sweden (all) | International | 1 | 0 | 0 | 0 | 0 | | | |||||||
| 2013-2014 | HV71 | SHL | 55 | 15 | 22 | 37 | 14 | | | Playoffs | 8 | 3 | 4 | 7 | 8 |
| HV71 | ET | 5 | 1 | 3 | 4 | 2 | | | |||||||
| Norfolk Admirals | AHL | 9 | 2 | 7 | 9 | 6 | | | Playoffs | 8 | 1 | 2 | 3 | 2 | |
| Sweden | EHT | 6 | 0 | 1 | 1 | 0 | | | |||||||
| Sweden (all) | International | 6 | 0 | 1 | 1 | 0 | | | |||||||
| 2014-2015 | Anaheim Ducks | NHL | 18 | 2 | 1 | 3 | 2 | | | ||||||
| Norfolk Admirals | AHL | 37 | 8 | 16 | 24 | 2 | | | |||||||
| Columbus Blue Jackets | NHL | 3 | 1 | 1 | 2 | 0 | | | |||||||
| Springfield Falcons | AHL | 15 | 0 | 0 | 0 | 0 | | | |||||||
| 2015-2016 | Columbus Blue Jackets | NHL | 81 | 9 | 11 | 20 | 6 | | | ||||||
| 2016-2017 | Columbus Blue Jackets | NHL | 81 | 6 | 19 | 25 | 10 | | | Playoffs | 5 | 2 | 1 | 3 | 0 |
| Sweden | EHT | 2 | 0 | 0 | 0 | 0 | | | |||||||
| Sweden | WC | 10 | 1 | 2 | 3 | 0 | | | |||||||
| Sweden (all) | International | 12 | 1 | 2 | 3 | 0 | | | |||||||
| 2017-2018 | Vegas Golden Knights | NHL | 82 | 43 | 35 | 78 | 12 | | | Playoffs | 20 | 7 | 8 | 15 | 2 |
| 2018-2019 | Vegas Golden Knights | NHL | 82 | 24 | 32 | 56 | 16 | | | Playoffs | 7 | 2 | 3 | 5 | 2 |
| 2019-2020 | Vegas Golden Knights | NHL | 63 | 15 | 31 | 46 | 16 | | | Playoffs | 20 | 4 | 6 | 10 | 0 |
| 2020-2021 | Vegas Golden Knights | NHL | 56 | 14 | 25 | 39 | 4 | | | Playoffs | 19 | 4 | 12 | 16 | 2 |
| 2021-2022 | Vegas Golden Knights | NHL | 67 | 12 | 23 | 35 | 10 | | | ||||||
| 2022-2023 | Vegas Golden Knights | NHL | 82 | 14 | 39 | 53 | 10 | | | Playoffs | 22 | 11 | 6 | 17 | 2 |
| 2023-2024 | Vegas Golden Knights | NHL | 70 | 30 | 30 | 60 | 22 | | | Playoffs | 7 | 0 | 2 | 2 | 0 |
| 2024-2025 | Vegas Golden Knights | NHL | 53 | 9 | 20 | 29 | 4 | | | Playoffs | 11 | 3 | 3 | 6 | 0 |
| Sweden | WC | 4 | 0 | 1 | 1 | 0 | | | |||||||
| Sweden (all) | International | 4 | 0 | 1 | 1 | 0 | | | |||||||
| 2025-2026 | Vegas Golden Knights | NHL | 14 | 4 | 3 | 7 | 4 | | |
William Karlsson ist ein schwedischer Eishockeyspieler.
