The Conca is a river in the Marche and Emilia-Romagna regions of Italy. Its source is Monte Carpegna, which is in the Montefeltro part of the province of Pesaro e Urbino. The river flows northeast near Macerata Feltria and Mercatino Conca before crossing into the province of Rimini. The river then flows past Morciano di Romagna before entering the Adriatic Sea southeast of Misano Adriatico and northwest of Cattolica.