Francesc Berenguer i Mestres (Reus 21 July 1866 - Barcelona 8 February 1914) was a Catalan Modernista architect, and an assistant and friend of Antoni Gaudí.
He worked with several architectural workshops. First, he worked for August Font i Carreras, former teacher at the School, and later was with Miguel Pascual i Tintorer, municipal architect of Gràcia and Josep Graner i Prat.