Maximilian Ullmann (born 17 June 1996) is an Austrian professional footballer who plays as a left-back for Grasshopper Club Zürich and the Austria national team.
On 18 January 2022, Ullmann signed a contract with Italian club Venezia until the end of the 2023âÂÂ24 season.
In January 2023 he joined 2. Bundesliga club 1. FC Magdeburg on loan.
On 30 July 2024, Ullmann moved to Wolfsberger AC on a one-season contract.
On 12 November 2025, he joined Grasshopper Club Zürich in the Swiss Super League. He signed a contract with the Swiss record champions until summer 2027. Just eleven days later, on 23 November 2025, he was nominated to Grasshopper's starting lineup against FC Basel and scored the opening goal in the 13th minute of the 1âÂÂ1 draw. On 2 December 2025, he scored the opening goal in the Swiss Cup round of 16 tie against SC Cham and supplied the assist for Grasshoppers' second goal in the 2âÂÂ1 victory.