Franz Tösch was born in Bruck an der Mur, Austria in 1967. He received his first trumpet lessons at the age of ten.
He studied with Hans Meister, Stanko Arnold and Hans Peter Schuh at the University of Music and Performing Arts Graz and Oberschützen.
While still at university he was a member of the Wiener Jeunesse Orchester and the Gustav Mahler Jugendorchester under Claudio Abbado. He was also a substitute in the Grazer Philharmonisches Orchester, the Orchestra of the Vienna State Opera and the Vienna Philharmonic. He is a member of the ensemble 11.
Since 1995 he has been teaching at the Oberschützen Institute of the University of Music and Performing Arts Graz and since 2007 at the music school in Neunkirchen.
He has been with the ORF Vienna Radio Symphony Orchestra since 1993.