| Sharjah Masters 2025 | Group A· May 20 – 25, 2025 | May 20 – 25, 2025 | Blitz | 73 | 2559 | 79 |
| Sharjah Masters 2025 | Group B· May 17 – 25, 2025 | May 17 – 25, 2025 | Blitz | 45 | 2305 | 37 |
RADNICKICHESS IM 1 May Belgrade SRB· May 17 – 25, 2025 | May 17 – 25, 2025 | Classical | 10 | 2254 | 43 |
| Pokalmannschaftsmeisterschaft 2024-25· May 23 – 25, 2025 | May 23 – 25, 2025 | Classical | 63 | 2022 | 75 |
Nusret Causevic Mem Blitz Sarajevo BIH· May 25, 2025 | May 25, 2025 | Blitz | 29 | 2312 | 151 |
8th Sharjah Masters 2025 Sharjah UAE· May 17 – 25, 2025 | May 17 – 25, 2025 | Classical | 83 | 2535 | 345 |
8th Sharjah Masters B Sharjah UAE· May 17 – 25, 2025 | May 17 – 25, 2025 | Classical | 69 | 2177 | 104 |
11th Gligoric Cup 2025 Paracin SRB· May 22 – 25, 2025 | May 22 – 25, 2025 | Classical | 80 | 2112 | 155 |
| Kapiti Rapid 2025· May 23 – 24, 2025 | May 23 – 24, 2025 | Rapid | 15 | 1788 | 9 |
| FIDE World RapidandBlitz Team Championships 2024 | Rapid Matches 11+Astana, Kazakhstan· Jan 6 – May 24, 2025 | Jan 6 – May 24, 2025 | Rapid | 12 | 2235 | 6 |
| FIDE World RapidandBlitz Team Championships 2024 | Blitz 1-10 (Pools Stage)Astana, Kazakhstan· Jan 17 – May 24, 2025 | Jan 17 – May 24, 2025 | Blitz | 10 | 2420 | 5 |
| ACA Interclubs 2025 | A-Grade· May 23 – 24, 2025 | May 23 – 24, 2025 | Blitz | 12 | 1849 | 7 |
| Serbian Cup -Svetozar Gligorić- | women· May 22 – 24, 2025 | May 22 – 24, 2025 | Classical | 21 | 1880 | 17 |
| Serbian Cup -Svetozar Gligorić- | Open· Mar 25 – May 24, 2025 | Mar 25 – May 24, 2025 | Classical | 46 | 2236 | 33 |
| FIDE World Junior Chess Championship 2025 | Open· Feb 3 – May 24, 2025 | Feb 3 – May 24, 2025 | Classical | 150 | 2309 | 262 |
14th Salento Open 2025 Gallipoli ITA· May 17 – 24, 2025 | May 17 – 24, 2025 | Classical | 11 | 2112 | 20 |
ch-GER Blitz 2025 Munich GER· May 24, 2025 | May 24, 2025 | Blitz | 30 | 2381 | 430 |
ch-CAT 2025 Salou ESP· May 17 – 24, 2025 | May 17 – 24, 2025 | Classical | 16 | 2343 | 49 |
| 4º Torneo Internacional - Villa la Angostura - Neuquen - Argentina· May 23 – 24, 2025 | May 23 – 24, 2025 | Blitz | 35 | 1808 | 48 |
ch-GER Blitz Women 2025 Munich GER· May 24, 2025 | May 24, 2025 | Blitz | 29 | 2019 | 389 |
| Colombia Nacional Amateur 2025 | Fem Sub-1700· May 22 – 23, 2025 | May 22 – 23, 2025 | Blitz | 11 | 1622 | 6 |
| 14. Salento International Chess Open 2025· May 17 – 23, 2025 | May 17 – 23, 2025 | Classical | 12 | 2053 | 12 |
| Nigeria National Sports Festival 2024 - Chess | Opens· May 19 – 23, 2025 | May 19 – 23, 2025 | Classical | 41 | 2059 | 33 |
| Colombia Nacional Amateur 2025 | Abs Sub-2000· May 22 – 23, 2025 | May 22 – 23, 2025 | Blitz | 12 | 1887 | 7 |
| Nigeria National Sports Festival 2024 - Chess | Female· May 19 – 23, 2025 | May 19 – 23, 2025 | Classical | 41 | 1810 | 41 |
| Colombia Nacional Amateur 2025 | Abs Sub-2300· Apr 13 – May 23, 2025 | Apr 13 – May 23, 2025 | Blitz | 15 | 2004 | 18 |
ch-GER Women 2025 Munich GER· May 20 – 23, 2025 | May 20 – 23, 2025 | Classical | 10 | 2246 | 20 |
| XCIII Campionat de Catalunya Individual Absolut 2025· May 6 – 23, 2025 | May 6 – 23, 2025 | Blitz | 30 | 2171 | 43 |
| Colombia Nacional Amateur 2025 | Fem Sub-2000· May 22 – 23, 2025 | May 22 – 23, 2025 | Blitz | 10 | 1768 | 8 |
Netanya Closed IM 2025 Netanya ISR· Apr 9 – May 23, 2025 | Apr 9 – May 23, 2025 | Classical | 11 | 2328 | 51 |
Karpov Cup - 50 years Moscow RUS· May 21 – 23, 2025 | May 21 – 23, 2025 | Classical | 10 | 2689 | 45 |
| Romanian Individual Championship 2025 | Open· Feb 15 – May 23, 2025 | Feb 15 – May 23, 2025 | Classical | 55 | 2220 | 81 |
96th ch-GER Masters 2025 Munich GER· May 15 – 23, 2025 | May 15 – 23, 2025 | Classical | 11 | 2602 | 40 |
96th ch-GER Candidates Munich GER· May 17 – 23, 2025 | May 17 – 23, 2025 | Classical | 32 | 2268 | 134 |
| German Championship Masters 2025 | Open· May 20 – 22, 2025 | May 20 – 22, 2025 | Classical | 9 | 2605 | 6 |
| German Championship Masters 2025 | women· May 20 – 22, 2025 | May 20 – 22, 2025 | Classical | 6 | 2237 | 5 |
| German Championship Candidates 2025 | women· May 17 – 22, 2025 | May 17 – 22, 2025 | Classical | 24 | 1940 | 49 |
| Prague International Chess Festival 2025 | OpenPrague, Czech Republic· Feb 27 – May 22, 2025 | Feb 27 – May 22, 2025 | Blitz | 65 | 2319 | 68 |
| German Championship Candidates 2025 | Open· May 19 – 22, 2025 | May 19 – 22, 2025 | Classical | 31 | 2291 | 35 |
2025 Türkiye Küçükler ve Yıldızlar Satranç Şampiyonası | 9-18 Yaş Antalya TUR· Jan 19 – May 22, 2025 | Jan 19 – May 22, 2025 | Classical | 158 | 1779 | 96 |
Mitropa Cup Women 2025 Trencin SVK· May 14 – 22, 2025 | May 14 – 22, 2025 | Classical | 48 | 2128 | 179 |
Mitropa Cup 2025 Trencin SVK· May 14 – 22, 2025 | May 14 – 22, 2025 | Classical | 47 | 2389 | 179 |
| 5ème Tournoi du mardi à Laval Canada 2025 | Section A· Apr 30 – May 21, 2025 | Apr 30 – May 21, 2025 | Blitz | 10 | 1781 | 11 |
| Mitropa Cup 2025 | Open· May 19 – 21, 2025 | May 19 – 21, 2025 | Classical | 31 | 2405 | 20 |
| Marshall Masters 2025 | May· May 21, 2025 | May 21, 2025 | Classical | 14 | 2134 | 12 |
| Mitropa Cup 2025 | women· May 19 – 21, 2025 | May 19 – 21, 2025 | Classical | 31 | 2132 | 21 |
| Svarta Hästen Vårblixt 2025· May 4 – 20, 2025 | May 4 – 20, 2025 | Blitz | 13 | 2345 | 16 |
| Czech Youth Championship 2025 | h16Kouty nad Desnou, Czech Republic· Mar 8 – May 20, 2025 | Mar 8 – May 20, 2025 | Classical | 25 | 2036 | 50 |
| 2025 African Individual Chess Championships | Open· May 13 – 20, 2025 | May 13 – 20, 2025 | Classical | 46 | 2153 | 34 |
| Sällskapets KM 2025· Jan 21 – May 20, 2025 | Jan 21 – May 20, 2025 | Blitz | 31 | 1998 | 31 |