Ivan Basso (born 26 November 1977) is an Italian former professional road bicycle racer, who rode professionally between 1999 and 2015 for seven different teams. Basso, nicknamed Ivan the Terrible, was considered among the best mountain riders in the professional field in the early 21st century, and was considered one of the strongest stage race riders. He is a double winner of the Giro d'Italia, having won the race in 2006 for Team CSC and 2010 for Liquigas–Doimo.

In 2007, Basso admitted to planning the use of blood doping and was suspended for two years. His suspension ended on 24 October 2008, and he returned to racing two days later in the Japan Cup, where he placed a close third behind Damiano Cunego and Giovanni Visconti. He later returned to racing in his home tour, and in 2010, he won his second Giro d'Italia, winning two stages along the way.