| Chess Tournament Name | Place | Start Date | End Date |
| Open du Jura chess tournament 2023 | Court, Switzerland | 01-Dec-23 | 03-Dec-23 |
| XX Festival Internacional Gran Hotel Bali | Benidorm, Alicante., Spain | 01-Dec-23 | 10-Dec-23 |
| Open international Chess tournament DUBROVNIK ADVENT 2023 | Dubrovnik, Croatia | 01-Dec-23 | 03-Dec-23 |
| Budapest GM-IM-ELO-Shev. Nadassy Sys, FM | Budapest, Hungary | 02-Dec-23 | 12-Dec-23 |
| RADNICKICHESS GM,IM and Scheveningen Chess tournament | Belgrade, Serbia | 04-Dec-23 | 12-Dec-23 |
| Riga Christmas Chess Classic 2023 | Riga, Latvia | 04-Dec-23 | 10-Dec-23 |
| ROMA CITTA’ APERTA
– 5° International Chess Festival | RM, Italy | 04-Dec-23 | 10-Dec-23 |
| IM ASK 11 Round Robin Chess tournament | Arandjelovac, Serbia | 04-Dec-23 | 10-Dec-23 |
| GM ASK 13 Round Robin Chess tournament | Arandjelovac, Serbia | 04-Dec-23 | 10-Dec-23 |
| Caldas Internacional Hotel Chess Open tournament | Caldas da Rainha, Portugal | 07-Dec-23 | 10-Dec-23 |
| LUGANO 2 Days OPEN Chess tournament | Lugano, Switzerland | 09-Dec-23 | 10-Dec-23 |
| Santa Claus Blitz Chess Tournament | Budapest, XVII., Hungary | 09-Dec-23 | 09-Dec-23 |
| GM ASK 14 Round Robin Chess tournament | Arandjelovac, Serbia | 11-Dec-23 | 17-Dec-23 |
| IM ASK 12 Round Robin Chess tournament | Arandjelovac, Serbia | 11-Dec-23 | 17-Dec-23 |
| X CHESSABLE SUNWAY SITGES INTERNATIONAL CHESS FESTIVAL | Sitges, Spain | 12-Dec-23 | 22-Dec-23 |
| Piraeus IM Norm Chess Tournament | Piraeus, Attica, Greece | 14-Dec-23 | 22-Dec-23 |
| DAVOS Swiss Ski Open Chess tournament | Davos CH 7270, Switzerland | 15-Dec-23 | 17-Dec-23 |
| XXVI. Rakosmenti Open Chess tournament | Budapest, XVII., Hungary | 15-Dec-23 | 17-Dec-23 |
| 27° Festival Internazionale di Scacchi “Grand Hotel Adriatico” | Montesilvano (Italy), Italy | 15-Dec-23 | 17-Dec-23 |
| GM/IM Chess tournament “Third Saturday-Djenovici” XII/23 | Herceg Novi, Montenegro | 16-Dec-23 | 24-Dec-23 |
| Christmas Rapid Chess Tournament 2023 | Arona – Tenerife, Spain | 17-Dec-23 | 17-Dec-23 |
| GM ASK 15 Round Robin Chess tournament | Arandjelovac, Serbia | 18-Dec-23 | 24-Dec-23 |
| IM ASK 13 Round Robin Chess tournament | Arandjelovac, Serbia | 18-Dec-23 | 24-Dec-23 |
| Chess festival Groningen 2023 | Groningen, Netherlands | 21-Dec-23 | 30-Dec-23 |
| Hotel Pantanha Chess Open tournament 2023 | Caldas de Felgueira/Nelas/Viseu, Portugal | 26-Dec-23 | 30-Dec-23 |
| 39. Int. Boeblinger Open tournament 2023 | Boeblingen, Germany | 26-Dec-23 | 30-Dec-23 |
| 20e Open International de Noel Mont de Marsan | MONT DE MARSAN, France | 26-Dec-23 | 30-Dec-23 |
| BASEL CHRISTMAS Chess FESTIVAL | Basel, Switzerland | 26-Dec-23 | 30-Dec-23 |
| III Chess Festival Escuela de Ajedrez Bambuchess | Villablanca, Huelva, Spain | 26-Dec-23 | 30-Dec-23 |
| III Chess Festival Escuela de Ajedrez Bambuchess Magistral – Valid for IM norm | Villablanca, Huelva, Spain | 26-Dec-23 | 30-Dec-23 |
| II Chess Festival de Navidad Open Internacional Ajedrez Diagonal Alcorcón | Alcorcón, Spain | 26-Dec-23 | 30-Dec-23 |
| IV Open Internacional de Ajedrez Dama Negra | (San Vicente) Alicante, Spain | 26-Dec-23 | 30-Dec-23 |
| XII LORCA CHESS FESTIVAL | Lorca (Murcia), Spain | 26-Dec-23 | 30-Dec-23 |
| 1st International WIM chess tournament Vezerkepzo 2023 | Budapest, Hungary | 26-Dec-23 | 03-Jan-24 |
| 32. Donau Open Chess tournament | Aschach an der Donau, Austria | 26-Dec-23 | 31-Dec-23 |
| XXXIV
International Chess Festival “CRACOVIA’2023” children | Krakow, Poland | 27-Dec-23 | 30-Dec-23 |
| 7th Blitz White Tower 2023 | Thessaloniki, Greece | 27-Dec-23 | 27-Dec-23 |
| 8th International Frankenthal Christmas Open Chess tournament 2023 | Frankenthal, Germany | 27-Dec-23 | 30-Dec-23 |
| XXXIV International Chess Festival “CRACOVIA’2023” | Krakow, Poland | 27-Dec-23 | 04-Jan-24 |
| 7th Rapid White Tower 2023 | Thessaloniki, Greece | 28-Dec-23 | 29-Dec-23 |
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