Reactive nitrogen loads causes important impacts on the environment (Soler-Rovira et al., 2008) so its flows and key sources and drivers knowledge are essential for developing management and policy options (De Clercq et al., 2001). The use of environmental indicators will help to understand a complex issue and facilitate decision making (EEA, 2005). The aim of this work is to apply a previous N flow analysis as a framework for the identification and selection of a set of environmental indicators pertaining to reactive N in the Spanish agricultural and food production sector