| Campeonato Centroamericano y del Caribe U20 | Absoluto· May 12 – 17, 2025 | May 12 – 17, 2025 | Blitz | 10 | 2217 | 9 |
| 3. Torneo Ajedrez Villa de Noblejas | III Torneo Ajedrez Villa de Noblejas· May 17, 2025 | May 17, 2025 | Blitz | 33 | 1824 | 34 |
| I CAMPEONATO DE XADREZ MENTES BRILHANTES (XIV)· May 17, 2025 | May 17, 2025 | Rapid | 16 | 1790 | 21 |
Superbet ROM Classic 2025 Bucharest ROU· May 7 – 16, 2025 | May 7 – 16, 2025 | Classical | 10 | 2748 | 45 |
16. KIIT Cat A Open 2025 Bhubaneswar IND· May 9 – 16, 2025 | May 9 – 16, 2025 | Classical | 89 | 2020 | 181 |
58th Capablanca Mem Open Havana CUB· May 10 – 16, 2025 | May 10 – 16, 2025 | Classical | 116 | 2138 | 288 |
Peter Long Memorial 2025 Roquetas de Mar ESP· May 10 – 16, 2025 | May 10 – 16, 2025 | Classical | 29 | 2044 | 87 |
16th KIIT Cat A Open 2025 Bhubaneswar IND· May 9 – 16, 2025 | May 9 – 16, 2025 | Classical | 83 | 2012 | 158 |
| 4ta Uncoli 2024-2025· May 13 – 16, 2025 | May 13 – 16, 2025 | Classical | 60 | 1730 | 85 |
Hovhannes Danielyan Memorial Erevan ARM· May 8 – 15, 2025 | May 8 – 15, 2025 | Classical | 10 | 2302 | 45 |
Grosslobming WGP 2025 Grosslobming AUT· May 6 – 15, 2025 | May 6 – 15, 2025 | Classical | 10 | 2482 | 45 |
Asian Individual 2025 Al Ain UAE· May 7 – 15, 2025 | May 7 – 15, 2025 | Classical | 159 | 2364 | 637 |
Asian Individual women Al Ain UAE· May 7 – 15, 2025 | May 7 – 15, 2025 | Classical | 100 | 2122 | 401 |
| Asian Individual Chess Championships 2025 | Open· May 10 – 15, 2025 | May 10 – 15, 2025 | Classical | 43 | 2321 | 24 |
76. ch-POL Women 2025 Krakow POL· May 6 – 14, 2025 | May 6 – 14, 2025 | Classical | 10 | 2325 | 45 |
82. PGE ch-POL 2025 Krakow POL· May 6 – 14, 2025 | May 6 – 14, 2025 | Classical | 10 | 2550 | 43 |
| NSCC Autumn Tournament 2025· Apr 16 – May 14, 2025 | Apr 16 – May 14, 2025 | Blitz | 37 | 1645 | 32 |
76th ch-POL Women 2025 Krakow POL· May 6 – 14, 2025 | May 6 – 14, 2025 | Classical | 10 | 2325 | 45 |
82nd PGE ch-POL 2025 Krakow POL· May 6 – 14, 2025 | May 6 – 14, 2025 | Classical | 10 | 2545 | 44 |
58. Capablanca Mem Open Havana CUB· May 10 – 14, 2025 | May 10 – 14, 2025 | Classical | 118 | 2134 | 286 |
| IRT Departamental J.A. de Primera Categoria 2025· May 8 – 13, 2025 | May 8 – 13, 2025 | Blitz | 37 | 1932 | 44 |
5. Big Rook Open 2025 Bangkok THA· May 7 – 12, 2025 | May 7 – 12, 2025 | Classical | 28 | 2028 | 54 |
5th Big Rook Open 2025 Bangkok THA· May 7 – 12, 2025 | May 7 – 12, 2025 | Classical | 26 | 2028 | 48 |
| All India Open Motilalji Firodia Classical 2025· May 7 – 11, 2025 | May 7 – 11, 2025 | Blitz | 20 | 1870 | 15 |
| HUN-chT Maroczy 2024-2025· Mar 16 – May 11, 2025 | Mar 16 – May 11, 2025 | Classical | 7 | 2241 | 6 |
| A Pasos De Gigante Festival FILC 2025 | Blitz· May 11, 2025 | May 11, 2025 | Blitz | 14 | 1745 | 9 |
| Botswana Metropolitan Championship 2025 Finals | Open· May 8 – 11, 2025 | May 8 – 11, 2025 | Blitz | 10 | 1983 | 26 |
| 2025 Guyana National Championship | Qualifiers· May 3 – 11, 2025 | May 3 – 11, 2025 | Blitz | 34 | 1646 | 39 |
| Botswana Metropolitan Championship 2025 Finals | women· May 8 – 11, 2025 | May 8 – 11, 2025 | Blitz | 10 | 1729 | 13 |
| Nikola Karaklajić Belgrade Cup 2025· May 10 – 11, 2025 | May 10 – 11, 2025 | Classical | 14 | 1958 | 8 |
| FIDE OPEN DALOVICE 2025· May 6 – 11, 2025 | May 6 – 11, 2025 | Blitz | 32 | 1949 | 39 |
| Tunisian Rapid Chess Championship 2025· May 10 – 11, 2025 | May 10 – 11, 2025 | Rapid | 75 | 1783 | 88 |
| A Pasos De Gigante Festival FILC 2025 | Rapido· May 11, 2025 | May 11, 2025 | Rapid | 30 | 1695 | 30 |
TCh-FRA Top 12 w GpB Paris FRA· May 8 – 11, 2025 | May 8 – 11, 2025 | Classical | 28 | 2080 | 60 |
| 4. Rio Chess Open 2025 | STD· May 5 – 11, 2025 | May 5 – 11, 2025 | Classical | 20 | 1996 | 29 |
| Chessahead - The Next Move· May 11, 2025 | May 11, 2025 | Rapid | 37 | 1757 | 44 |
TCh-HUN 2024-25 Hungary HUN· May 9 – 11, 2025 | May 9 – 11, 2025 | Classical | 118 | 2333 | 151 |
TCh-FRA Top 12 w GpA Paris FRA· May 8 – 11, 2025 | May 8 – 11, 2025 | Classical | 26 | 2128 | 59 |
Grand Prix Bucharest 2025 Bucharest ROU· May 10 – 11, 2025 | May 10 – 11, 2025 | Classical | 169 | 2100 | 284 |
ch-SRB Semi-Final Women Senta SRB· May 5 – 11, 2025 | May 5 – 11, 2025 | Classical | 8 | 1960 | 26 |
ch-SRB Semi-Final 2025 Senta SRB· May 5 – 11, 2025 | May 5 – 11, 2025 | Classical | 42 | 2160 | 156 |
| Czech Amateur Championship 2025 | Standard· May 9 – 11, 2025 | May 9 – 11, 2025 | Blitz | 52 | 2118 | 46 |
Karshi Open III 2025 Karshi UZB· May 5 – 11, 2025 | May 5 – 11, 2025 | Classical | 35 | 2167 | 83 |
| 4. Rio Chess Open 2025 | RPD· May 10, 2025 | May 10, 2025 | Rapid | 13 | 1942 | 23 |
| 4. Rio Chess Open 2025 | BLZ· May 10, 2025 | May 10, 2025 | Blitz | 15 | 1923 | 34 |
| Asian Individual Chess Championships 2025 | Women Blitz· Mar 4 – May 10, 2025 | Mar 4 – May 10, 2025 | Blitz | 25 | 1960 | 15 |
| Czech Amateur Championship 2025 | Blitz· May 10, 2025 | May 10, 2025 | Blitz | 99 | 2029 | 197 |
| Spanish University Rapid and Blitz Championship | Rapid· Apr 4 – May 10, 2025 | Apr 4 – May 10, 2025 | Blitz | 56 | 2206 | 68 |
Asian Individual Blitz Al Ain UAE· May 10, 2025 | May 10, 2025 | Blitz | 108 | 2346 | 307 |
Asian Ind Women Blitz Al Ain UAE· May 10, 2025 | May 10, 2025 | Blitz | 78 | 2119 | 153 |