Guillermo Ortelli (born in Salto, Buenos Aires Province on April 25, 1973) is an Argentine racing car driving, who currently is competing in several domestic series.
After having some success in football (he played for homecity's Club Sports Salto until 5th division and was champion once) he started his career in motor racing.
His father, Hugo, bought him a go-kart when he was 16 years old so he could compete in the Buenos Aires Province kart tournament. He was vice-champion in the series with rivals as Norberto Fontana. His talent was worthy of an invite by Tulio Crespi to drive for Argentine Formula Renault.
The two-year period in Formula Renault meant an opportunity to drive a Tulio Crespi's Ford Escort XR3 in TC2000 series. He also started his career in Turismo Carretera (TC), the most popular car racing category in Argentina. In 1998, he became the youngest TC champion. He was distinguished by Clarín and Olimpia Awards that year.
He got his second TC championship in 2000, assisted by Jorge Pedersoli and Sandro Crespi. He was also vice-champion in Top Race that year. The conflict between ACTC and CDA (ACA) meant that he could not compete in TC2000 (he was planned to partner Juan María Traverso and Lucas Armelini in Toyota team).
He managed to win both the 2001 Top Race and TC Championships to Omar Martínez in the very last race of each season. After the ACTC-ACA conflict came to an end, he could return to TC2000 at the wheel of Honda partnering Juan Manuel Silva and Oscar Larrauri.