Mikołaj Grzelak (born 20 June 1991) is a Polish professional footballer who plays as a defender for III liga, group I club GKS Bełchatów.
Grzelak made his Ekstraklasa debut in a 0–2 away loss against Górnik Zabrze on 2 November 2012, playing 9 minutes.
[1] Grzelak returned to playing after 236 days of absence in a league fixture against Miedź Legnica on 5 March 2021.
[2] On 7 September 2022, he rejoined GKS Bełchatów, now in fifth division, on a deal until the end of the season.
This biographical article related to a Polish association football defender is a stub.