Ján Nosko (born 25 May 1988) is a Slovak football defender who currently plays for the 2. Liga club MFK Dukla Banská Bystrica.
He made his professional debut for Dukla Banská Bystrica against Spartak Myjava on 12 July 2013.
Between 2015 and 2019, Nosko had spent 4,5 years playing with FK Pohronie, collecting some 140 competitive caps and scoring 11 competitive goals. He had won the 2. Liga with the club in 2018–19 season, winning clubs first promotion to the Fortuna Liga.