2015 in chess
Events in chess during the year 2015:
2015 tournaments
This is a list of significant 2015 chess tournaments:| Tournament | Dates | Players | Winner | Runner-up | Third |
| 2015 Tata Steel Chess Tournament | 12–27 January | 14 |  Magnus Carlsen |  Maxime Vachier-Lagrave |  Anish Giri |
| 2015 Grenke Chess Classic | 2–9 February | 8 | Magnus Carlsen |  Arkadij Naiditsch |  Michael Adams |
| 2015 Zurich Chess Challenge | 13–19 February | 6 |  Hikaru Nakamura |  Viswanathan Anand |  Vladimir Kramnik |
| FIDE Grand Prix 2014–15 Tbilisi | 14–28 February | 12 | Evgeny Tomashevsky | Dmitry Jakovenko |  Teimour Radjabov |
| Women's World Chess Championship 2015 | 16 March–7 April | 64 |  Mariya Muzychuk | Natalia Pogonina | Dronavalli Harika  Pia Cramling |
| 2015 Aeroflot Open | 27 March–7 April | 68 | Ian Nepomniachtchi | Daniil Dubov | Ivan Bukavshin |
| Shamkir Chess 2015 | 16–26 April | 10 | Magnus Carlsen | Viswanathan Anand | Wesley So |
| FIDE Grand Prix 2014–15 Khanty-Mansiysk | 14–26 May | 12 | Dmitry Jakovenko | Hikaru Nakamura |  Fabiano Caruana |
| Norway Chess 2015 | 15–26 June | 10 |  Veselin Topalov | Viswanathan Anand | Hikaru Nakamura |
| 2015 Dortmund Sparkassen Chess Meeting | 27 June–5 July | 8 | Fabiano Caruana | Wesley So | Liviu-Dieter Nisipeanu |
| 2015 Biel Chess Festival | 20–30 July | 6 | Maxime Vachier-Lagrave |  Radosław Wojtaszek | Michael Adams |
| 2015 Sinquefield Cup | 22 August–3 September | 10 |  Levon Aronian | Magnus Carlsen | Hikaru Nakamura |
| Chess World Cup 2015 | 10 September–5 October | 128 | Sergey Karjakin | Peter Svidler | Anish Giri Pavel Eljanov |
| Millionaire Chess 2015 | 8–12 October | Hikaru Nakamura |  Lê Quang Liêm |  Yu Yangyi | |
| 2015 World Rapid Chess Championship | 10–12 October | 158 | Magnus Carlsen | Ian Nepomniachtchi | Teimour Radjabov |
| 2015 World Blitz Chess Championship | 13–14 October | 188 | Alexander Grischuk | Maxime Vachier-Lagrave | Vladimir Kramnik |
| 2015 Bilbao Chess Masters Final | 25 October–1 November | 4 | Wesley So | Anish Giri | Viswanathan Anand Ding Liren |
| 2015 London Chess Classic | 4–13 December | 10 | Magnus Carlsen | Anish Giri | Maxime Vachier-Lagrave |
| 2015 Qatar Masters Open | 20–29 December | 132 | Magnus Carlsen | Yu Yangyi | Vladimir Kramnik |
Key dates
- 26 May: Fabiano Caruana and Hikaru Nakamura clinch the top two positions in the FIDE Grand Prix 2014–15, securing their spots in the 2016 Candidates Tournament
- 5 October: Sergey Karjakin and Peter Svidler place first and second, respectively, in the Chess World Cup 2015, securing two spots in the 2016 Candidates Tournament
- 12 October: Magnus Carlsen defends the World Chess Rapid Championship title
- 14 October: Alexander Grischuck wins the World Chess Blitz Championship title
FIDE world rankings
| Rank | Player | Rating |
| 1 | Magnus Carlsen | 2834 |
| 2 | Veselin Topalov | 2803 |
| 3–4 | Viswanathan Anand | 2796 |
| 3–4 | Vladimir Kramnik | 2796 |
| 5 | Hikaru Nakamura | 2793 |
| 6 | Levon Aronian | 2788 |
| 7 | Fabiano Caruana | 2787 |
| 8 | Anish Giri | 2784 |
| 9 | Ding Liren | 2776 |
| 10 | Wesley So | 2775 |
| 11 | Maxime Vachier-Lagrave | 2773 |
| 12 | Sergey Karjakin | 2766 |
| 13 | Pavel Eljanov | 2763 |
| 14 | Peter Svidler | 2751 |
| 15 | Li Chao | 2750 |
| 16 | Shakhriyar Mamedyarov | 2748 |
| 17 | Alexander Grischuk | 2747 |
| 18 | Evgeny Tomashevsky | 2744 |
| 19 | Pentala Harikrishna | 2743 |
| 20–21 | Michael Adams | 2737 |
| 20–21 | Dmitry Jakovenko | 2737 |