| Hit Open 2025· Jan 24 – 31, 2025 | Jan 24 – 31, 2025 | Blitz | 88 | 1995 | 165 |
| Juegos CONADE 2025 Municipal Campeche | Sub-20 Var· Jan 30, 2025 | Jan 30, 2025 | Classical | 6 | 1745 | 6 |
| Olympiáda dětí a mládeže 2025 | G16· Jan 27 – 30, 2025 | Jan 27 – 30, 2025 | Blitz | 11 | 1788 | 12 |
| Juegos CONADE 2025 Municipal Campeche | Sub-12 Var· Jan 30, 2025 | Jan 30, 2025 | Classical | 8 | – | 8 |
| Olympiáda dětí a mládeže 2025 | U-16· Jan 27 – 30, 2025 | Jan 27 – 30, 2025 | Blitz | 14 | 2010 | 19 |
| Brazil Chess Series | Floripa 2025· Jan 16 – 30, 2025 | Jan 16 – 30, 2025 | Blitz | 84 | 2167 | 102 |
| Olympiáda dětí a mládeže 2025 | U-14· Jan 27 – 30, 2025 | Jan 27 – 30, 2025 | Blitz | 14 | 1911 | 21 |
| Olympiáda dětí a mládeže 2025 | blesk družstev· Jan 30, 2025 | Jan 30, 2025 | Blitz | 44 | 1899 | 135 |
| Uzbekistan championship between 8-12 | U10· Jan 28 – 29, 2025 | Jan 28 – 29, 2025 | Blitz | 8 | 1580 | 5 |
| Uzbekistan championship between 8-12 | G8· Jan 28 – 29, 2025 | Jan 28 – 29, 2025 | Blitz | 10 | 1757 | 5 |
| FICGS__CHESS__RAPID_A__000307FICGS· Jan 29, 2025 | Jan 29, 2025 | Classical | 6 | 2095 | 14 |
| 2025 Oceania Zonal 3.6Melbourne, Australia· Jan 24 – 29, 2025 | Jan 24 – 29, 2025 | Blitz | 49 | 2044 | 48 |
Oceania Zonal Women 2025 Melbourne AUS· Jan 24 – 29, 2025 | Jan 24 – 29, 2025 | Classical | 18 | 1802 | 25 |
Oceania Zonal 2025 Melbourne AUS· Jan 24 – 29, 2025 | Jan 24 – 29, 2025 | Classical | 45 | 2058 | 72 |
| 3. Lt Diloo Dhar Memorial· Jan 22 – 28, 2025 | Jan 22 – 28, 2025 | Blitz | 27 | 1880 | 22 |
ISR Ch 2024 Eilat ISR· Jan 20 – 28, 2025 | Jan 20 – 28, 2025 | Classical | 19 | 2306 | 19 |
| Israeli Chess Championships 2024 | women· Jan 20 – 28, 2025 | Jan 20 – 28, 2025 | Classical | 10 | 2108 | 19 |
| Israeli Chess Championships 2024 | Open· Jan 17 – 28, 2025 | Jan 17 – 28, 2025 | Classical | 33 | 2380 | 50 |
ch-ISR 2024 Eilat ISR· Jan 20 – 28, 2025 | Jan 20 – 28, 2025 | Classical | 30 | 2320 | 123 |
Winnipeg TNT 2025.01 Winnipeg CAN· Jan 7 – 28, 2025 | Jan 7 – 28, 2025 | Classical | 21 | 1767 | 27 |
RUDAR 15 GM 2025 Pozarevac SRB· Jan 20 – 27, 2025 | Jan 20 – 27, 2025 | Classical | 10 | 2432 | 42 |
RUDAR 34 IM 2025 Pozarevac SRB· Jan 20 – 27, 2025 | Jan 20 – 27, 2025 | Classical | 10 | 2231 | 45 |
Danish Team Chess Championship 2024-25 Denmark DEN· Jan 25 – 26, 2025 | Jan 25 – 26, 2025 | Classical | 12 | 2229 | 6 |
| 1er Rapide Caïssa Bordeaux· Jan 26, 2025 | Jan 26, 2025 | Rapid | 13 | 2312 | 10 |
| Canadian University Chess Championship 2025 | Crown· Jan 25 – 26, 2025 | Jan 25 – 26, 2025 | Blitz | 23 | 2036 | 16 |
| SACA Australia Day January Classical 2025· Jan 25 – 26, 2025 | Jan 25 – 26, 2025 | Blitz | 11 | 1765 | 10 |
| 2. German Women's Bundesliga 2024-25 | Süd· Jan 25 – 26, 2025 | Jan 25 – 26, 2025 | Classical | 12 | 1873 | 9 |
| Canadian University Chess Championship 2025 | Reserve· Jan 25 – 26, 2025 | Jan 25 – 26, 2025 | Blitz | 14 | 1747 | 10 |
11. Floripa Open 2025 Florianopolis BRA· Jan 18 – 26, 2025 | Jan 18 – 26, 2025 | Classical | 374 | 1815 | 1,176 |
11th Floripa Open 2025 Florianopolis BRA· Jan 18 – 26, 2025 | Jan 18 – 26, 2025 | Classical | 369 | 1804 | 901 |
| CHILE NACIONAL SUB 20 2025 | FEMENINOPolideportivo Estadio Nacional, Chile· Jan 20 – 25, 2025 | Jan 20 – 25, 2025 | Blitz | 11 | 1698 | 14 |
| Marienbad Open 2025 | B2 (IM)· Jan 18 – 25, 2025 | Jan 18 – 25, 2025 | Classical | 10 | 2253 | 16 |
| Marienbad Open 2025 | A (GM)· Jan 18 – 25, 2025 | Jan 18 – 25, 2025 | Classical | 8 | 2389 | 12 |
| CHILE NACIONAL SUB 20 2025 | ABSOLUTOPolideportivo Estadio Nacional, Chile· Jan 20 – 25, 2025 | Jan 20 – 25, 2025 | Blitz | 37 | 1878 | 43 |
| Kazakhstan Cadet and Junior Chess Championship 2025 | Blitz G16· Jan 25, 2025 | Jan 25, 2025 | Blitz | 16 | 1631 | 16 |
| LBXF Circuito Ruth Volk Cardoso Final 2024· Jan 16 – 25, 2025 | Jan 16 – 25, 2025 | Blitz | 29 | 1687 | 26 |
| Marienbad Open 2025 | B1 (IM)· Jan 18 – 25, 2025 | Jan 18 – 25, 2025 | Classical | 10 | 2263 | 24 |
| Provincial Albacete 2025· Jan 11 – 25, 2025 | Jan 11 – 25, 2025 | Blitz | 47 | 1733 | 51 |
| Torneo Enroques Educativos | Libre· Jan 25, 2025 | Jan 25, 2025 | Blitz | 16 | 1783 | 18 |
| Kazakhstan Cadet and Junior Chess Championship 2025 | Blitz G18· Jan 25, 2025 | Jan 25, 2025 | Blitz | 20 | 1726 | 24 |
| Keshmat Rapid Circuit #4 January 2025Keshmat CHess Center, Lebanon· Jan 25, 2025 | Jan 25, 2025 | Rapid | 24 | 1885 | 23 |
2025 Türkiye Küçükler Satranç Şampiyonası | 7-12 Yaş Antalya TUR· Jan 21 – 25, 2025 | Jan 21 – 25, 2025 | Blitz | 186 | 1669 | 189 |
| Kazakhstan Cadet and Junior Chess Championship 2025 | Blitz U16· Jan 24 – 25, 2025 | Jan 24 – 25, 2025 | Blitz | 42 | 1905 | 49 |
23rd Marienbad B1 IM 2025 Marianske Lazne CZE· Jan 18 – 25, 2025 | Jan 18 – 25, 2025 | Classical | 10 | 2263 | 42 |
23rd Marienbad A1 GM 2025 Marianske Lazne CZE· Jan 18 – 25, 2025 | Jan 18 – 25, 2025 | Classical | 10 | 2406 | 41 |
23rd Marienbad B2 IM 2025 Marianske Lazne CZE· Jan 18 – 25, 2025 | Jan 18 – 25, 2025 | Classical | 10 | 2192 | 40 |
| Kazakhstan Cadet and Junior Chess Championship 2025 | Blitz U18· Jan 24 – 25, 2025 | Jan 24 – 25, 2025 | Blitz | 37 | 1962 | 53 |
| IMSS Sección XII Coahuila· Jan 25, 2025 | Jan 25, 2025 | Blitz | 11 | 2098 | 25 |
| Kazakhstan Cadet and Junior Chess Championship 2025 | Rapid G16· Jan 23 – 24, 2025 | Jan 23 – 24, 2025 | Rapid | 19 | 1728 | 21 |
| Kazakhstan Cadet and Junior Chess Championship 2025 | Rapid G18· Jan 23 – 24, 2025 | Jan 23 – 24, 2025 | Rapid | 24 | 1689 | 32 |