Tossal Gros de Vallbona is a mountain of the Catalan Central Depression, Catalonia, Spain. It has an elevation of 802 metres above sea level.
This mountain is the highest summit of the Serra del Tallat; it is located between the municipal limits of Espluga de FrancolÃÂ, Conca de BarberÃÂ and Vallbona de les Monges, Urgell.