| FIRST SATURDAY May 2024, Budapest GM-IM-FM | Budapest, Hungary | 04 May 2024 | 14 May 2024 |
| Bodenseeopen 2024 | Bregenz, Austria | 04 May 2024 | 12 May 2024 |
| Bodensee-Senioreopen 2024 | Bregenz, Austria | 05 May 2024 | 11 May 2024 |
| 3rd OPEN CHESS TOURNAMENT MIKIS THEODORAKIS | CHANIA, GREECE | 06 May 2024 | 12 May 2024 |
| Karlovy Vary OPEN 2024 | Dalovice, Czech Republic | 07 May 2024 | 12 May 2024 |
| Czech Amateur Chess Championship Festival 2024 | Hluk, Czech Republic | 07 May 2024 | 12 May 2024 |
| 51ST KRONBORG CHESS OPEN 2024 | Snekkersten, Denmark | 08 May 2024 | 12 May 2024 |
| 20th Stockerau Chess Open | Stockerau, Austria | 09 May 2024 | 12 May 2024 |
| Chess Tournament Grand Prix | Pasching, Austria | 09 May 2024 | 12 May 2024 |
| 1° Torneo Internazionale “Città di Acquasparta” GRAN PRIX DELL’ UMBRIA | Acquasparta ( TR ), Italy | 10 May 2024 | 12 May 2024 |
| II Nomme Chess Festival | Tallinn, Estonia | 10 May 2024 | 12 May 2024 |
| SixDays May 2024 | Budapest, Hungary | 16 May 2024 | 21 May 2024 |
| PARADISO Festival | Lugano – Paradiso, Switzerland | 17 May 2024 | 19 May 2024 |
| GM/IM tournament “Third Saturday-Djenovici” V/24 | Herceg Novi, Montenegro | 18 May 2024 | 26 May 2024 |
| 15. Engadiner Pfingstopen | Zernez, Switzerland | 18 May 2024 | 20 May 2024 |
| 1st Masters 50+ and 65+ | Vandoeuvre, France | 18 May 2024 | 20 May 2024 |
| III Torneig Internacional d’Escacs Actius “CAL BATISTA” | Bagà (BARCELONA), Spain | 19 May 2024 | 19 May 2024 |
| Budapest Spring Festival (A-B-C group) | Budapest, Hungary | 23 May 2024 | 31 May 2024 |
| RADNICKICHESS GM,IM and Scheveningen {rating) tournaments | Belgrade, Serbia | 23 May 2024 | 31 May 2024 |
| 43th Zalakaros Chess Festival – Bárczay László Memorial | Zalakaros, Hungary | 25 May 2024 | 02 Jun 2024 |
| 13th Salento International Chess Open – Ecoresort Le Sirenè 2024 | Gallipoli (Lecce), Italy | 25 May 2024 | 01 Jun 2024 |
| Tatrafest – Open Tatry 2024 | Vysoké Tatry, Slovakia | 25 May 2024 | 01 Jun 2024 |
| Tatrafest – 19th Open Slovak senior championship 2024 | Vysoké Tatry, Slovakia | 25 May 2024 | 01 Jun 2024 |
| SPRING in KRAKOW – children | Krakow, Poland | 30 May 2024 | 02 Jun 2024 |
| SPRING in KRAKOW XXXIV International Chess Championship of Malopolska | Krakow, Poland | 30 May 2024 | 02 Jun 2024 |
| Tatrafest – 18th Seniorblitz | Vysoké Tatry, Slovakia | 30 May 2024 | 30 May 2024 |
| New Zagreb Classic Futures 2024, International Youth Chess Tournament (U20) | Zagreb, Croatia | 30 May 2024 | 01 Jun 2024 |
| XXIX. Rakosmenti Open | Budapest, XVII., Hungary | 31 May 2024 | 02 Jun 2024 |
| V Coop Saaremaa Chess Festival | Kuressaare, Estonia | 31 May 2024 | 02 Jun 2024 |
| 4º IRT Internacional Ajedrez en Alicante | Paseo de la Explanada de España Nº16. (Alicante)., Spain | 31 May 2024 | 02 Jun 2024 |
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