Here is a list of every National Champion from this year's (TCG) WCQ season. This list was put together from various sources within the Yu-Gi-Oh! community, and I'd like to thank all of you for your contributions.
Argentina May 12 Santiago Vera Final Countdown Decklist/Report (Winner) Australia June 9/10 Jackson Spadaro Dino Rabbit Decklist/Report (Winner) Austria May 13 Deniz Mailänder Dino Rabbit Decklists Belgium May 12/13 Kim van Campenhoudt Dino Rabbit Deck Profile (Winner) Bolivia May 12 Carlos Daher Wind-Up Decklists Brazil May 19/20 Vinicius de Souza Chaos Dragon Decklists Bulgaria June 2 Boris Ivanov Inzektor - Chile May 19 Sebastian Mora Dino Rabbit Decklist (Winner) Colombia May 13 Manuel Buriticá HERO Decklists (Partial) Costa Rica May 20 Luis Soto Wind-Up - Croatia June 16 Martin Rodin Wind-Up Coverage Czech Republic June 9/10 Jan Obrovský Dino Rabbit - Denmark June 16/17 August Kaufmann Final Countdown - Dominican Republic May 6 Cesar Armando Nazare Six Samurai Decklists Ecuador May 19 Roger Munoz Inzektor Decklists El Salvador May 20 Oscar Oliva Chaos Dragon - Finland June 16 Alexander Trivedi Piper Chaos - France April 28/29 Sebastien Ma Wind-Up Decklists (Partial) Germany May 26/27 Muci Izki Chaos Dragon Decklists Greece June 17 Vaslis Koltoukis Dino Rabbit Deck Profile Guatemala May 5 Alejandro Cañas Inzektor Decklist (Winner) Honduras May 12 Alejandro Andres Aguiluz HERO Decklist (Winner) Ireland June 2 Adam Hussein Dino Rabbit Decklists Israel April 10/11 Roi D. Dino Rabbit Decklists Italy June 23/24 Stefano Lenti-Livraghi Chaos Dragons Decklists Jamaica May 19 Gary Sham Hieratic Decklists Malta May 20 Gary Grima-Mifsud Wind-Up - Mexico May 19/20 Eli Cerdan Dino Rabbit Videos Netherlands June 9/10 Floris van Asch Inzektor Coverage New Zealand June 3 Chris Dalton Wind-Up Coverage Nicaragua May 13 Uriel Cisnero Machina - Norway May 27 An Bao Le Dino Rabbit Decklists Panama May 20 Galileo de Obaldia Dino Rabbit Decklist (Winner/Team) Peru May 20 Johan Marquez Inzektor Decklists (Partial) Poland June 16/17 Krzysztof Duda HERO Decklists Portugal May 26 Helio Babo Final Countdown Decklists Slovenia May 26 Miha Filsek Chaos Dragon Decklists South Africa June 16 Krishern Govender Inzektor Decklist (Winner) Spain June 16/17 Antonio Ripoll Gadgets Deck Profile Sweden May 26/27 Teodor Hurtigh Isaacs Chaos Dragon - Switzerland May 26 Reto Canova Inzektor Videos Turkey June 3 Murat Bicakci Dino Rabbit Photos United Kingdom June 9/10 Jovhan Roberts Dino Rabbit - Venezuela May 20 José David Martinez HERO Decklist (Winner)
Note: This is an unofficial list, and as such may not be 100% accurate.