This research aims to explain the role of World Wild Fund for Nature (WWF) Indonesia especially WWF-Riau in preventing the overfishing problem in Rokan Hilir Riau Province. Overfishing in Rokan Hilir’s sea usual happened. The actors are some from foreign fishermen, out-region fisherman, although Rokan Hilir’s fisherman. Some boats were caught and didn’t have license. Beside that, they als…