Alessandro Fancellu (born 24 April 2000) is an Italian cyclist who currently rides for UCI Pro Team . Fancellu previously rode for , where he was promoted to the senior team in 2020 after a year with their under-23 development side.
In the junior men's road race at the 2018 UCI Road World Championships, Fancellu finished over a minute and a half behind runaway winner Remco Evenepoel but managed to outsprint Alexandre Balmer to take the bronze medal. In 2020, from 1 August until the end of the year, Fancellu joined UCI WorldTeam as a stagiaire.
Fancellu started his sport career in association football, playing for local amateur side Oratorio Solbiate as an attacker before taking up cycling at the age of 12.