Paolo Francesco Gregoletto (born September 14, 1985) is an American musician and songwriter who is best known as the bassist of the heavy metal band Trivium. Metal producer Colin Richardson called him the best bassist he has ever worked with.
Gregoletto joined Trivium on September 5, 2004 when Matt Heafy, Corey Beaulieu and Travis Smith were in the studio demoing new material for what would become Ascendancy. Gregoletto was in the studio with Jason Suecof next to where Trivium were demoing, and was told by Suecof that they needed a bass player. After jamming with other members, Gregoletto agreed to record for Ascendancy and tour to promote it with the band. Gregoletto originally had no intentions of staying with Trivium, but wanted touring experience. He joined just in time for the tour Trivium booked with Machine Head.
Apart from playing bass, he also is capable of playing the guitar. He has been a songwriter for Trivium since The Crusade, on which he composed the songs "To The Rats" and "The Rising" on his own, as well as being the co-writer of "Anthem (We Are The Fire)" with Matt Heafy. He also wrote the intro riff for the track "Throes of Perdition" while playing guitar.