| Personal information | |||
|---|---|---|---|
| Full name | Sebastian Denius Nielsen | ||
| Date of birth | 8 June 1995 | ||
| Position | Attacking midfielder | ||
| Youth career | |||
| Viborg | |||
| Senior career* | |||
| Years | Team | Apps | (Gls) |
| 2013–2016 | Viborg | 3 | (0) |
| 2015 | → Kjellerup (loan) | ||
| 2016–2018 | Kjellerup | 56 | (9) |
| 2018–2022 | Skive | 124 | (22) |
| 2022–2024 | Kolding | 40 | (7) |
| 2024–2025 | Aarhus Fremad | 47 | (8) |
| Managerial career | |||
| 2023–2024 | Kolding (transition coach) | ||
| * Club domestic league appearances and goals | |||
Sebastian Denius Nielsen (born 8 June 1995) is a Danish retired professional footballer who played as an attacking midfielder. [1]
Denius moved from Kjellerup to Skive in July 2018, [2] and to Kolding in July 2022. [3] In January 2023, Kolding confirmed that Denius would also take on the role of transition coach, while remaining a player at the club. [4] On 26 January 2024, the club confirmed that Denius had had his contract terminated as he was seeking more playing time. [5]
On 16 February 2024, Denius joined Danish 2nd Division side Aarhus Fremad. [6] In June 2025, after a season where the club gained promotion to the 2025-26 Danish 1st Division, Denius left the club. [7]
On 2 September 2025, Denius announced his retirement from football, at the age of 30. [8]