The 2006 International GT Open season was the inaugural season of the International GT Open, the grand tourer-style sports car racing founded by the Spanish GT Sport Organización. It began on 1 April at Autodromo Nazionale Monza and finished on 12 November, at Barcelona after five double-header meetings with one single race round.

Overall championship and GTA class was won by Playteam SaraFree driver Michele Bartyan, while GTB class title was clinched by Fabrizio Gini and GTS class by Andrea Belicchi and Stefano Zonca.^[1][2][3]

Round		Circuit	Date	Pole position	GTA Winner	GTB Winner	GTS Winner
1	R1	Autodromo Nazionale Monza	21 April	No. 36 Playteam SaraFree	No. 2 Esc. Bengala	No. 29 Racing Box	No. 27 Racing Box
				Michele Bartyan Alessandro Pier Guidi	Lucas Guerrero José Manuel Pérez-Aicart	Marco Cioci Piergiuseppe Perazzini	Andrea Belicchi Stefano Zonca
	R2		22 April	No. 2 Esc. Bengala	No. 36 Playteam SaraFree	No. 43 Roger Racing	No. 28 Racing Box
				Lucas Guerrero José Manuel Pérez-Aicart	Michele Bartyan Alessandro Pier Guidi	Ángel Santos Henk van Zoest	Luca Cappellari Angelo Lancelotti
2	R1	Circuit de Nevers Magny-Cours, Magny-Cours	29 April	No. 36 Playteam SaraFree	No. 36 Playteam SaraFree	No. 29 Racing Box	No. 33 Paolo Cutrera
				Michele Bartyan Alessandro Pier Guidi	Michele Bartyan Alessandro Pier Guidi	Marco Cioci Piergiuseppe Perazzini	Paolo Cutrera Gianni Giudici
	R2		30 April	No. 20 Edil Cris Racing Team	No. 20 Edil Cris Racing Team	No. 29 Racing Box	No. 42 Fernando Glez.-Camino
				Matteo Cressoni Paolo Ruberti	Matteo Cressoni Paolo Ruberti	Marco Cioci Piergiuseppe Perazzini	Juan Ignacio Villacieros Francesc Robert
3	R1	Autódromo do Estoril, Estoril	24 June	No. 20 Edil Cris Racing Team	No. 53 GPC Sport	No. 46 Cesar Rodrigo Perez	No. 27 Racing Box
				Matteo Bobbi Paolo Ruberti	Pedro Bastos Andrea Montermini	Cesar Rodrigo Daniel Rodrigo	Andrea Belicchi Stefano Zonca
	R2		25 June	No. 20 Edil Cris Racing Team	No. 20 Edil Cris Racing Team	No. 46 Cesar Rodrigo Perez	No. 27 Racing Box
				Matteo Bobbi Paolo Ruberti	Matteo Bobbi Paolo Ruberti	Cesar Rodrigo Daniel Rodrigo	Andrea Belicchi Stefano Zonca
4	R1	Istanbul Park, Istanbul	23 September	No. 5 RSV Motorsport	No. 2 Esc. Bengala	No. 35 Gianni Giudici	No. 27 Racing Box
				Domingo Romero Peter Sundberg	Lucas Guerrero José Manuel Pérez-Aicart	Giuseppe Arlotti Fabrizio Gini	Vural Ak Ahmet Özgün
	R2		24 September	No. 2 Esc. Bengala	No. 2 Esc. Bengala	No. 43 Roger Racing	No. 27 Racing Box
				Lucas Guerrero José Manuel Pérez-Aicart	Lucas Guerrero José Manuel Pérez-Aicart	Ángel Santos Henk van Zoest	Vural Ak Ahmet Özgün
5	R1	Circuit Ricardo Tormo, Cheste	7 October	No. 4 GPC Sport	No. 58 Victory Engineering	No. 42 Roger Racing	No. 29 Racing Box
				Marco Lambertini Andrea Montermini	Damien Pasini Maurizio Mediani	Antonio Castro Santiago García	Marco Cioci Piergiuseppe Perazzini
	R2		8 October	No. 52 Esc. Roger Racing	No. 4 GPC Sport	No. 61 Santiago García	No. 27 Racing Box
				Javier Díaz Santiago Puig	Marco Lambertini Andrea Montermini	Antonio Castro Santiago García	Andrea Belicchi Stefano Zonca
6	R	Circuit de Catalunya, Montmeló	12 November	No. 36 Playteam SaraFree	No. 36 Playteam SaraFree	No. 38 Marcos Racing	No. 80 Damax
				Michele Bartyan Alessandro Pier Guidi	Michele Bartyan Alessandro Pier Guidi	Pedro Névoa Fred van Putten	Jonathan Lang Martin Rich

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