Olivier Tambosi (born 7 July 1963) is an Austrian opera and operetta director.

Born in Paris, Tambosi studied music theatre direction at the University of Vienna. Philosophy and Theology, and at the University of Music and Performing Arts Vienna.

In 1990, he founded the Neue Oper Wien (artistic director until 1993). Subsequently, he was head of musical theatre at the Stadttheater Klagenfurt until 1996. Since 1996 he has made guest appearances internationally as a director and has worked among others with conductors Philippe Auguin, John Axelrod, Bruno Bartoletti, Jiří Bělohlávek, Dietfried Bernet, Daniele Callegari, Paolo Carignani, Frédéric Chaslin, James Conlon, Dennis Russell Davies, Mark Elder, Mikko Franck, Bernard Haitink, Jakub Hrůša, Vladimir Jurowski, Karen Kamensek, Peter Keuschnig, Axel Kober, Walter Kobéra, Nicola Luisotti, Jun Märkl, Seiji Ozawa, Antonio Pappano, Donald Runnicles, Peter Schneider, Patrick Summers, Alexander Soddy.^[1][2]

Among the singers Tambosi has worked with are Marcelo Álvarez, Daniela Barcellona, Joseph Calleja, Barbara Frittoli, Ferruccio Furlanetto, Lucio Gallo, Vladimir Galouzin, Eric Halfvarsson, Dmitri Hvorostovsky, Angelika Kirchschlager, Éva Marton, Karita Mattila, Deborah Polaski, Neil Shicoff, Anja Silja, Nina Stemme, Bryn Terfel, Ramón Vargas, Christopher Ventris, Linda Watson and Eva-Maria Westbroek.^[3][4]

His engagements have taken him in Austria among others to the Graz Opera, the Landestheater Linz, the Vienna Volksoper and the Bregenz Festival, in Germany to the Staatsoper Hannover, the Staatstheater am Gärtnerplatz Munich, in Europe at the Liceu Barcelona, the Royal Opera House Covent Garden, National Opera Helsinki, the Strasbourg Opera and to the Lucerne Festival, the Theater Biel Solothurn, in America to the Metropolitan Opera New York, to Chicago, Houston, San Francisco Opera and Los Angeles, San Diego Opera as well as to the Saito Kinen Festival in Japan.^[5][6]

Tambosi is married with the Swiss soprano Christiane Boesiger (born 1966 in Zürich).