Simon Seidl

Seidl began his career at SV Kuchl before moving to SV Grödig for the 2016–17 season. He returned to Kuchl ahead of the 2018–19 season, initially playing for the club's reserve team before making his first-team debut in the Salzburger Liga in 2018. On 29 July 2022, he transferred to FC Blau-Weiß Linz on a 2+1 year contract. Blau-Weiß Linz won the 2. Liga title in June 2023, earning promotion to the Austrian Bundesliga for the first time in the club's history. On 28 May 2026, he transferred to Sturm Graz.

Seidl has represented Austria at under-21 level since 2023.

As of match played 22 October 2026

Seidl is the brother of fellow footballer Matthias Seidl.