| 1–13 Dec | Major Series of Poker - The Tour - MSPT Winter Poker Classic Series | MSPT | United States |
| 1–6 Dec | Round 15 - Sheffield | Grosvenor G200 | Sheffield, United Kingdom |
| 1–6 Dec | Round 15 - Glasgow MC | Grosvenor G200 | Glasgow, United Kingdom |
| 1–6 Dec | Round 12 - Luton | Grosvenor G300 | Luton, United Kingdom |
| 1–13 Dec | MSPT Running Aces Casino | Mid States | Running Aces, United States |
| 1–6 Dec | DeepStack Open La Tour De Salvagny | DeepStack Open | La Tour De Salvagny, France |
| 1–12 Dec | RPT Championship Grand Final | — | Hanoi, Vietnam |
| 2–17 Dec | WSOP Paradise | WSOP | Nassau, Bahamas |
| 2–13 Dec | European Poker Tour - EPT Prague | European Poker Tour | Prague, Czech Republic |
| 2–6 Dec | MegaPoker Festival Pornic | MegaPoker Festival | Pornic, France |
| 2–6 Dec | German Poker Days | — | Rozvadov, Czech Republic |
| 2–13 Dec | PokerStars EPT Barcelona | European Poker Tour | Barcelona, Spain |
| 3–6 Dec | LNP Winamax San Roque | Winamax | Cádiz, Spain |
| 3–6 Dec | TexaPoker Series Le Havre | TexaPoker Series | Le Havre, France |
| 3–6 Dec | FRESH POKER FESTIVAL MANDELIEU DÉCEMBRE | Fresh Poker Festival | Mandelieu, France |
| 3–6 Dec | Basler Poker Festival Décembre | Basler Poker Festival | Bâle, Switzerland |
| 3–6 Dec | Galway Winter Festival | Irish | Galway, Ireland |
| 3–6 Dec | TPS Monsterstacks Pornic | TPS Monsterstacks | Pornic, France |
| 4–13 Dec | Kings of Vilnius | — | Lithuania |
| 4–13 Dec | AJPC Samurai Circuit - Incheon 2026 III. | — | Incheon, South Korea |
| 7–14 Dec | Sixers Madrid By Sportium | Sixers Poker Series | Madrid, Spain |
| 9–13 Dec | LNP Winamax Lloret De Mar | Winamax | Lloret de Mar, Spain |
| 9–13 Dec | Partouche Poker Deepstack La Grande-Motte | Partouche Poker Deepstack | La Grande-Motte, France |
| 9–20 Dec | APC Taipei IV | — | Taipei City, Taiwan |
| 10–13 Dec | TexaPoker Series Pornic | TexaPoker Series | Pornic, France |
| 10–13 Dec | TPS Monsterstacks Saint-Galmier | TPS Monsterstacks | Saint-Galmier, France |
| 10–13 Dec | Cannes Poker Festival Décembre | Cannes Poker Festival | Cannes, France |
| 10–13 Dec | TexaPoker Series ANNECY | TexaPoker Series | ANNECY, France |
| 10–13 Dec | TexaPoker Series Forges Les Eaux | TexaPoker Series | Forges Les Eaux, France |
| 12–20 Dec | The partypoker Tour - London | partypoker LIVE | London, United Kingdom |
| 12–23 Dec | QPC Winter | — | Hanoi, Vietnam |
| 14–21 Dec | France Poker Open Paris | France Poker Open | Paris, France |
| 14–21 Dec | Pirates Poker Treasure "Xmas Mystery Bounty" | — | Rozvadov, Czech Republic |
| 14–23 Dec | The Olympus Return - GOP Jeju | — | Jeju, South Korea |
| 15–20 Dec | Grand Prix by Unibet Aix-en-Provence | Grand Prix by Unibet | Aix-en-Provence, France |
| 16–21 Dec | Ola Poker Tour Taipei | — | Taipei City, Taiwan |
| 17–20 Dec | TexaPoker Series Pornic | TexaPoker Series | Pornic, France |
| 17–20 Dec | TPS Monsterstacks Annemasse | TPS Monsterstacks | Annemasse, France |
| 21–28 Dec | Czech Poker Master "Christmas Edition" | — | Rozvadov, Czech Republic |
| 24 Dec – 3 Jan | JOPT 2027 Tokyo #01 | — | Tokyo, Japan |
| 26–30 Dec | TexaPoker Series Pornic | TexaPoker Series | Pornic, France |
| 26–30 Dec | Texapoker Deepstacks ANNECY | Texapoker Deepstacks | ANNECY, France |
| 27 Dec | Portlaoise €40k in a Day | Irish | Ireland |
| 31 Dec | MSPT The Venetian | Mid States | Nevada, United States |