Costel Busuioc (born 21 October 1974, Goruni, Tomeşti, Iaşi) is a Romanian tenor.

Busuioc has sung opera arias and Christian music since he was a teenager; he used to be a cantor in several Transylvanian churches.

While in Spain, a friend insisted that he take part in an audition for the local immigrant-oriented talent contest called Hijos de Babel (sp.

Of the 4,000 people who had initially signed up for the contest, Busuioc was pronounced the winner on 13 March 2008, after passing a tie-break stage the same day – he first sang the air Libiamo ne' lieti calici from Traviata by Verdi and then Puccini's Nessun dorma (from the opera Turandot), which won him the contest.

Busuioc actually had music lessons in Timișoara for three years, but his schedule was so tiresome that he could hardly find the time to practice.