Mario Roberto Viera Gil (born 19 October 1959) is a Uruguayan football manager and former player who played as a goalkeeper. He is the current manager of Peruvian club Carlos A. Mannucci.
Mario Viera (Florida, Uruguay, 19 de octubre de 1959) es un exfutbolista y entrenador uruguayo. Jugaba de portero y ha dirigido principalmente en equipos de Perú. Su hijo es el actual arquero del Junior de Barranquilla, Sebastian Viera. Actualmente dirige al Carlos A. Mannucci (es)
Mario Roberto Viera Gil (born 19 October 1959) is a Uruguayan football manager and former player who played as a goalkeeper. He is the current manager of Peruvian club Carlos A. Mannucci. (en)