From Twitter Motorsports

The Dutch GT4 Championship is a sports car championship created and organized by the Stéphane Ratel Organisation (SRO) and sanctioned by the Fédération Internationale de l'Automobile (FIA).

[edit] Dutch GT4 Championship on Twitter

• @dutchgt4 - Probably official (Unverified) (Dutch language)
• @sromg - SRO Motorsports Group, sanctioning body, Probably official (Unverified)

FIA GT Championship and Other FIA/SRO-sanctioned GT Series

Super GT  |  British GT  |  European GT3  |  European GT4  |  GT Masters  |  FFSA GT  |  Belgian GT  |  Brazil GT3  |  Dutch GT4