Benedikt Leitner was born in Vienna and began playing the cello at the age of seven.
He studied with Prof. Hedy Feierl at the Conservatory of the City of Vienna as well as with Prof. Valentin Erben at the University of Music, Vienna, where he graduated in 1990.
Later he studied chamber music with Serge Collot and Günter Pichler and participated in master classes with Tobias Kühne.
He played his first concert with the Klangforum in December 1989 at the Vienna Secession. As a soloist, chamber musician and member of Klangforum Wien since 1990 he has performed at numerous festivals as well as participating in radio- and CD-recordings in Europe, the USA and Japan.
He also accompanied Michael Heltau in his solo program for years as a member of the "Wiener Theatermusiker" and debuted in 2016 in a supporting role as a performing musician in the film "Kater" by Händl Klaus.