| Date | Game | Event | Location | Winner/s |
|---|
| January 6 | Dota 2 | i-League Season 2 | China | LGD Gaming |
| January 9–11 | Smite | Smite World Championship | Cobb Energy Performing Arts Center
Atlanta, Georgia, US | COGnitive Prime |
| January 30–February 1 | Super Smash Bros. series
numerous games | Apex 2015 | Garden State Convention Center
Somerset, New Jersey, US | SuPeRbOoMfAn (Smash 64)
PPMD (Melee)
Ally (Brawl)
ZeRo (Smash 4) |
| February 24–October 6 | iRacing.com | NASCAR Peak Antifreeze Series | Online | Kenny Humpe[1] |
| February 1–March 27 | Dota 2 | Major All Stars Dota 2 Tournament finals | Kuala Lumpur | Invictus Gaming |
| February 9 | Dota 2 | Dota 2 Asia Championships | Shanghai,China | Evil Geniuses |
| March 1 | World of Tanks | Wargaming.net EU Gold Series Season 5 Finals | Sofia,Bulgaria | Kazna Kru |
| March 8 | Halo 2: Anniversary | Halo Championship Series (HCS) Season 1 Finals (PAX East 2015) | Boston,Massachusetts | Evil Geniuses |
| March 15 | StarCraft II
League of Legends | Intel Extreme Masters (IEM)Season IX Katowice | Katowice,Poland | SC2: Zest
LoL:Team SoloMid |
| March 15 | Counter-Strike: Global Offensive | Electronic Sports League (ESL) One Katowice | Katowice | fnatic |
| March 27–29 | Call of Duty: Advanced Warfare | Major League GamingCall of Duty Championship | Los Angeles,California, US | Denial eSports |
| March 29 | Counter-Strike: Global Offensive | Star Ladder StarSeries Season XII | Kyiv,Ukraine | Ninjas in Pyjamas |
| April 5 | StarCraft II | 2015StarCraft II World Championship Series (WCS) Season 1 | France | Polt |
| April 6 | League of Legends | Vietnam Championship Series (VCS) Spring 2015 | Vietnam (online) | Saigon Fantastic Five |
| April 6 | numerous games | Gamers Assembly | Poitiers | (see article) |
| April 8 | League of Legends | Challenger Series Spring Finals | Los Angeles | Enemy eSports |
| April 9 | League of Legends | Tencent LoL Secondary Pro League 2015 Spring Finals | China | Qiao Gu |
| April 12 | Dota 2 | joinDOTA MLG Pro League Season 1 | Columbus, Ohio | Team Empire |
| April 12 | League of Legends | Garena Premier League (GPL) Spring 2015 | Vietnam National Convention Center
Từ Liêm,Hanoi | Saigon Fantastic 5 |
| April 11–26 | Heroes of the Storm | Heroes of the Dorm | Shrine Auditorium
Los Angeles | University of California, Berkeley |
| May 2–3 | Call of Duty: Advanced Warfare | Electronic Sports World Cup (ESWC 2015) | Zénith de Paris
Paris,France | OpTic Gaming |
| July 17–19 | numerousfighting games | Evolution 2015 | Bally's /Paris Las Vegas Casino
Las Vegas,Nevada, US | seemain article |
| July ?-23[2] | Halo 2: Anniversary[2] | Halo Championship Series (HCS) Season 2 Finals[2] | Burbank,California[2] | Evil Geniuses[2] |
| August 3–8 | Dota 2 | The International 2015 | KeyArena
Seattle,Washington, US | Evil Geniuses |
| August 22–23 | Counter-Strike: Global Offensive | ESL One Cologne 2015 | Cologne,Germany | Fnatic |
| September 19–20 | Counter-Strike: Global Offensive
Super Smash Bros. Melee | DreamHack London 2015 | London,England,United Kingdom | |
| September 19–20 | numerous games | DreamHack Stockholm 2015 | | |
| October 31 | League of Legends | League of Legends World Championship grand finals | Mercedes-Benz Arena
Berlin,Germany | SK Telecom T1 |
| November 7 | Hearthstone: Heroes of Warcraft | Hearthstone World Championship 2015 | Anaheim, California | Sebastian "Ostkaka" Engwall[3] |
| November 26–29 | Numerous games | DreamHack Winter 2015 | Jönköping,Sweden | |
| December 2–5 | Hearthstone: Heroes of Warcraft
League of Legends
StarCraft II: Legacy of the Void | IeSFE-Sports World Championship 2015 | Seoul,South Korea | Team Serbia |
| December 4–6 | Crossfire | Crossfire Stars (CFS) 2015 Grand Finals | Guangzhou, China | HG.LongZhu |
| December 6 | Ultra Street Fighter IV | Capcom Cup 2015 | Moscone Center
San Francisco,California, US | Kazunoko |
