Mattia Stefanelli (born 12 March 1993) is a Sammarinese footballer who plays for Fiorentino and San Marino national team.
[11] In June 2012 he was signed by Crotone in co-ownership deal for €300,000,[12] despite Cesena would only receive half of the registration rights of Fabrizio Bramati "worth" €300,000.
[12] Stefanelli joined the pre-season camp of Romagna club Forlì in July 2012, along with Cesena players Leonardo Arrigoni and Mattia Filippi.
Stefanelli made his competitive San Marino U21 debut on 3 September 2010, the last match of 2011 UEFA European Under-21 Championship qualification.
On 12 October 2016, Stefanelli scored his first goal for San Marino in the World Cup qualification competition against Norway.