StadtTheater walfischgasse, Historic theatre in Innere Stadt, Vienna, Austria

StadtTheater walfischgasse is a theater venue in Vienna's inner city that hosts diverse stage productions. The building contains a main auditorium with approximately 270 seats and a smaller performance space called theaterCercle located in the foyer for more intimate shows.

The venue opened in October 1959 as Neues Theater am Kärntnertor under Gerhard Bronner, who closed it in 1966. From 1978 Helmut Siderits ran it as Kleine Komödie until 2003. Anita Ammersfeld took over in 2004 and opened the stadtTheater walfischgasse on 20 April 2005 with Charles Lewinsky's Freunde, das Leben ist lebenswert.

The house name comes from Walfischgasse 4, where "Gasse" simply means lane. Under Anita Ammersfeld (2004–2015) the programme paired political-satirical pieces with modern music theatre and Austrian cabaret, and the house staged premieres by Charles Lewinsky, Felix Mitterer, Peter Turrini, Lida Winiewicz, Peter Patzak and Rupert Henning. Guest highlights included Herman van Veen and Edith Leerkes, The Tiger Lillies and Marianne Faithfull.

The theater sits at Walfischgasse 4, just off the Kärntner Straße in Vienna's first district, a few minutes on foot from the Staatsoper and Karlsplatz. The main auditorium holds 271 seats; the smaller theaterCercle in the foyer was used for readings, solo performances and concerts.

The main auditorium seats 271. A second, smaller stage called theaterCercle hosted readings, solo performances and concerts. Guest highlights included sold-out concert series with Herman van Veen and Edith Leerkes, The Tiger Lillies, and an evening with Marianne Faithfull.