| Individuels FEFB 2025: Open· May 28 – 31, 2025 | May 28 – 31, 2025 | Blitz | 41 | 1860 | 38 |
| XII KATOWICKI FESTIWAL SZACHOWY – OPEN | Boards 1-100· Feb 18 – May 31, 2025 | Feb 18 – May 31, 2025 | Blitz | 304 | 1965 | 557 |
18th American Continental Foz do Iguacu BRA· May 23 – 31, 2025 | May 23 – 31, 2025 | Classical | 220 | 2076 | 849 |
Itzehoe Open 2025 Itzehoe GER· May 29 – 31, 2025 | May 29 – 31, 2025 | Classical | 114 | 1760 | 250 |
50. OKU 2025 Utrecht NED· May 30, 2025 | May 30, 2025 | Classical | 33 | 2249 | 25 |
| XVIII American Continental Chess Championship 2025 | STD· May 30, 2025 | May 30, 2025 | Blitz | 14 | 2489 | 7 |
| Israeli Women Elite League 2025· May 29 – 30, 2025 | May 29 – 30, 2025 | Blitz | 63 | 1966 | 61 |
Coop Saaremaa Blitz 2025 Kuressaare EST· May 30, 2025 | May 30, 2025 | Blitz | 43 | 2258 | 105 |
| Cambridge International Open 3rdCambridge· May 26 – 30, 2025 | May 26 – 30, 2025 | Classical | 108 | 2031 | 374 |
American Cont Blitz 2025 Foz do Iguacu BRA· May 30, 2025 | May 30, 2025 | Blitz | 33 | 2301 | 134 |
| 2025 Box Hill Chess Club Championship· Mar 28 – May 30, 2025 | Mar 28 – May 30, 2025 | Blitz | 38 | 1835 | 36 |
| 3. Cambridge International 2025· May 26 – 30, 2025 | May 26 – 30, 2025 | Classical | 49 | 2103 | 36 |
Grand Prix PlusCity Rapid Pasching AUT· May 30, 2025 | May 30, 2025 | Rapid | 112 | 2344 | 193 |
TCh-NED Cup 2025 Oosterhout NED· May 29, 2025 | May 29, 2025 | Classical | 18 | 2313 | 17 |
35. International Chess Festival CRACOVIA 2024 Krakow POL· Jan 2 – May 29, 2025 | Jan 2 – May 29, 2025 | Classical | 40 | 2248 | 25 |
| XVIII American Continental Chess Championship 2025· Jan 14 – May 29, 2025 | Jan 14 – May 29, 2025 | Blitz | 48 | 2371 | 41 |
Guillermo Garcia Open Santa Clara CUB· May 21 – 29, 2025 | May 21 – 29, 2025 | Classical | 45 | 1921 | 169 |
1. Sofia Spring 2025 Sofia BUL· May 29, 2025 | May 29, 2025 | Classical | 39 | 2224 | 20 |
TCh-Kosovo Elite 2025 Prishtina KOS· May 24 – 29, 2025 | May 24 – 29, 2025 | Classical | 67 | 2160 | 164 |
1st Sofia Spring 2025 Sofia BUL· May 23 – 29, 2025 | May 23 – 29, 2025 | Classical | 72 | 2155 | 181 |
Grand Prix PlusCity Blitz Pasching AUT· May 29, 2025 | May 29, 2025 | Blitz | 112 | 2351 | 254 |
| 1. KMC Inter Ward Team Chess Tournament Nepal· May 28, 2025 | May 28, 2025 | Blitz | 16 | 1821 | 11 |
Niemann-Dubov Raketa m Moscow RUS· May 27 – 28, 2025 | May 27 – 28, 2025 | Classical | 2 | 2271 | 20 |
| French Top 16 Club Championship 2025 | A Pool· May 22 – 28, 2025 | May 22 – 28, 2025 | Classical | 78 | 2376 | 84 |
| Sofia Spring Chess 2025· May 23 – 28, 2025 | May 23 – 28, 2025 | Classical | 60 | 2226 | 73 |
Chess Week Przeworsk GM Przeworsk POL· May 22 – 28, 2025 | May 22 – 28, 2025 | Classical | 10 | 2342 | 45 |
TCh-FRA Top 16 GpA 2025 Belfort FRA· May 22 – 28, 2025 | May 22 – 28, 2025 | Classical | 88 | 2339 | 217 |
TCh-FRA Top 16 GpB 2025 Belfort FRA· May 22 – 28, 2025 | May 22 – 28, 2025 | Classical | 92 | 2417 | 224 |
| XI Sunway Sitges International Chess Festival 2024 | Group AHotel Sunway Playa Golf & Spa, Sitges (Barcelona), Spain· Jan 11 – May 27, 2025 | Jan 11 – May 27, 2025 | Blitz | 9 | 2439 | 5 |
| Campeonato Uruguayo 2025 | FINAL ABSOLUTA· Apr 11 – May 27, 2025 | Apr 11 – May 27, 2025 | Classical | 8 | 2196 | 6 |
| Chess Week in Przeworsk 2025 - GM Norm· May 22 – 27, 2025 | May 22 – 27, 2025 | Classical | 10 | 2440 | 17 |
| 2025 African Schools Individual Chess Championship· May 23 – 27, 2025 | May 23 – 27, 2025 | Classical | 73 | 1694 | 55 |
| The republican stage of the Chess Olympiad of the Battle of the Minds· Feb 22 – May 27, 2025 | Feb 22 – May 27, 2025 | Blitz | 107 | 1773 | 225 |
| French Top 16 Club Championship 2025 | B Pool· May 22 – 27, 2025 | May 22 – 27, 2025 | Classical | 69 | 2435 | 77 |
| ExpoFeria Escárcega 2025 | 14 años· May 25 – 26, 2025 | May 25 – 26, 2025 | Classical | 10 | 1666 | 9 |
30. Sigeman & Co 2025 Malmo SWE· May 20 – 26, 2025 | May 20 – 26, 2025 | Classical | 8 | 2643 | 13 |
| Memorial Day Marshall Invitational 2025 | GM A· May 23 – 26, 2025 | May 23 – 26, 2025 | Blitz | 10 | 2399 | 15 |
| 2025 Southern California State Championship· May 24 – 26, 2025 | May 24 – 26, 2025 | Classical | 8 | 2486 | 9 |
Match of Two Capitals Moscow RUS· May 24 – 26, 2025 | May 24 – 26, 2025 | Classical | 2 | 2216 | 6 |
| Memorial Day Marshall Invitational 2025 | IM C· May 23 – 26, 2025 | May 23 – 26, 2025 | Blitz | 10 | 2260 | 16 |
| ACC Monday Nights 2025 | Autumn Rapid· May 26, 2025 | May 26, 2025 | Rapid | 17 | 1847 | 10 |
| Memorial Day Marshall Invitational 2025 | IM B· May 23 – 26, 2025 | May 23 – 26, 2025 | Blitz | 10 | 2273 | 9 |
Marshall Mem Day Inv IM C New York USA· May 22 – 26, 2025 | May 22 – 26, 2025 | Classical | 10 | 2260 | 44 |
| European Women's Chess Championship 2024 | Blitz· Jan 5 – May 26, 2025 | Jan 5 – May 26, 2025 | Blitz | 62 | 2296 | 111 |
| TePe Sigeman and Co Chess Tournament 2025· May 20 – 26, 2025 | May 20 – 26, 2025 | Blitz | 7 | 2636 | 7 |
ch-Southern California Van Nuys, CA USA· May 23 – 26, 2025 | May 23 – 26, 2025 | Classical | 9 | 2490 | 28 |
30th Sigeman & Co 2025 Malmo SWE· May 20 – 26, 2025 | May 20 – 26, 2025 | Classical | 8 | 2538 | 26 |
Marshall Mem Day Inv IM B New York USA· May 22 – 26, 2025 | May 22 – 26, 2025 | Classical | 9 | 2247 | 36 |
39th Voivoda Cup 2025 Legnica POL· May 20 – 26, 2025 | May 20 – 26, 2025 | Classical | 10 | 2379 | 45 |
Guillermo Garcia Prem 1 Santa Clara CUB· May 21 – 26, 2025 | May 21 – 26, 2025 | Classical | 10 | 2407 | 30 |