Andrea Montanari (born 10 August 1965) is a retired Italian sprinter who specialized in the 400 metres. He won one medal, at senior level, at the International athletics competitions.
He finished fourth in the relay at the 1990 European Championships, with teammates Vito Petrella, Roberto Ribaud and Andrea Nuti. His personal best time is 46.16 seconds, achieved in August 1993 in Bologna. He has 14 caps in national team from 1987 to 1993.
Andrea Montanari has won one time the individual national championship.