Sebastian Denius

Sebastian Denius Nielsen is a Danish retired professional footballer who played as an attacking midfielder.

Career

Denius moved from Kjellerup to Skive in July 2018, and to Kolding in July 2022. In January 2023, Kolding confirmed that Denius would also take on the role of transition coach, while remaining a player at the club. On 26 January 2024, the club confirmed that Denius had had his contract terminated as he was seeking more playing time.
On 16 February 2024, Denius joined Danish 2nd Division side Aarhus Fremad. In June 2025, after a season where the club gained promotion to the 2025-26 Danish 1st Division, Denius left the club.
On 2 September 2025, Denius announced his retirement from football, at the age of 30.