Johannes Nussbaum already acted in the school theater at Mödling elementary school. At the suggestion of the theater group supervisor, Nussbaum applied to the Viennese agency Eva Roth Casting, a well-known agency for casting children and amateur actors. He successfully completed an audition and audition for the film Import Export by Ulrich Seidl, shot in 2005/2006 and completed in May 2007, in which he made his film debut at the age of nine, alongside Maria Hofstätter and Petra Morzé. He was selected from among several hundred children for his first film role.

Filmography

• 2026Die andere Seite — Skifahrer
• 2025Bubbles — Luca
• 2025The Three Investigators and the Carpathian Dog — Sonny Elmquist
• The Empress — Archduke Maximilian
• 2021Hannes — Hannes
• 2021Steirertod — Daniel Bergmann
• 2021Steirerwut — Daniel Bergmann
• 2020Kaltmiete — Sven
• 2019A Hidden Life — Josef
• 2019Prélude — Walter
• 2019Steirerkreuz — Daniel Bergmann
• 2018Steirerkind — Daniel
• 2016Die Hebamme II — Pauli
• Suburbia - Women on the Edge — Simon Schneider
• 2015Suck Me Shakespeer 2 — Cedric
• 2015The von Trapp Family: A Life of Music — Sigi
• 2014Die Hebamme — Pauli
• 2013Diamantenfieber — Hans
• 2012Friends Forever — Ferry
• 2007Import/Export — Sohn Einfamilienhaus
• Vienna Crime Squad — Kevin Ebner
• Scene of the Crime — Max

Appearances as themselves (1)

• Romy Award — Self