| Argentina | Juegos & Co. S.R.L | Mr. Juan Poniachik |
| Bangladesh | Daily Prothom Alo | A B M Jabed Sultan Pias |
| Brazil | Editora Ortogonal Ltda. | Daniel Fonseca Lavouras, Fernando Akeo Naganawa |
| Bulgaria | Mensa - Bulgaria | Deyan Razsadov |
| China | Beijing Media Network | George Wang, Li Ying, Mr. Peng Jin |
| Chinese Taipei | Taiwan Sudoku Association | Mr. Oddest Wu |
| Croatia | Hrvatski Zagonetacki Savez | Mladen Mestrovic, Pero Galogaza |
| Czech Republic | Hrácská asociace logických her a sudoku, o.s. (HALAS) | Mr. Karel Tesar, Vítezslav Koudelka |
| Estonia | As Kuma | Jaanus Laidna |
| Finland | Suomen puzzle-harrastajat Ahaa! | Mr. Juha Hyvönen |
| France | Federation Francaise des Jeux Mathematiques | Jean-Christophe Novelli, Michel Criton |
| Germany | Logic Masters Deutschland e.V. | Johannes Susen, Ulrich Voigt |
| Greece | Mensa Greece | Christos Apostolidis |
| Hungary | Rejtvényfejtők Országos Egyesülete | György István |
| India | Logic Masters India | Mr. Amit Sowani |
| Italy | Nonzero srl | Alberto Rossetti |
| Japan | Japan Puzzle Federation | Yuhei Kusui |
| Korea | Korea Creative Puzzle Association | John HC Park, Mr. J. B. Park |
| Netherlands | WCPN | Hans Eendebak |
| New Zealand | Aotearoa Puzzles Limited | Jordan Hamel |
| Philippines | Mathematics Trainers' Guild (Philippines) | Dr. Simon L. Chua |
| Poland | Fundacja Rozwoju Matematyki Rekreacyjnej SFINKS | Mr. Tomasz Krajewski |
| Romania | Asociatia ''Logic Club'' Romania | Stelian-Radu Cacuci |
| Russia | Planet of puzzles | Andrey Bogdanov |
| Serbia | Savez zagonetaca Srbije (SZS) | Zoran Tanasic |
| Slovakia | Slovenský zväz hádankárov a kríovkárov | Blanka Lehotská, Ján Farka |
| Switzerland | Swiss Puzzle Federation | Markus Roth |
| Turkey | Akil Oyunlari Ltd. Sti. | Kamer Alyanakyan |
| United Arab Emirates | Rootstalk Learning Solutions FZ-LLC | Gaurav Singla |
| United Kingdom | UK Puzzle Association | Alan O'Donnell |
| Uruguay | Gimnasio Mental TECA - Grupo Ingenio Uruguay | Mrs Débora Saviotti |
| USA | U.S. Puzzle Championship | Nick Baxter |