Jason Thomas Muranka (; born 4 August 1989) is a Serbian international rugby league footballer who last played for Oldham RLFC in League 1. He plays as a second row. Of Serbian descent on his mother's side, Muranka has represented the Serbian White Eagles.
Muranka has previously played for the Dewsbury Rams, Doncaster and Keighley Cougars, and spent time on loan at the Gloucestershire All Golds and Newcastle Thunder.
On 4 Nov 2021 it was reported that he had signed for Oldham R.L.F.C. in the RFL League 1