Oliver Provstgaard Nielsen (born 4 June 2003) is a Danish professional footballer who plays as a centre-back for Serie A club Lazio.
17-year-old Provstgaard was selected for Vejle's first team for the first time when he was in the squad for a Danish Cup game against Hobro IK on 7 October 2020.
[2] Two months later, Provstgaard suffered a serious knee injury in an U-19 match, requiring surgery and an 8-month break.
[5] With a number of injuries in Vejle's defence, Provstgaard made his official debut for the club on 14 April 2022 against OB in the Danish Superliga, where he played the entire match.
[6][7] On February 3, 2025, on transfer deadline day, it was confirmed that Provstgaard joined Italian Serie A club SS Lazio.