Tomi Kostadinov Kostadinov (; born 15 March 1991) is a Bulgarian footballer who plays as a midfielder for Vihren Sandanski.
In July 2014, Kostadinov moved to Azerbaijan Premier League team AZAL, before having his contract terminated by mutual consent in January 2015, and signing for PFC Minyor Pernik. In the summer of 2015, he signed with Vitosha Bistritsa in the third division of Bulgarian football.
Kostadinov is religious and observes Saturday rather than Sunday as a non-working day (he does not train or participate in matches held on Saturdays).