Alexandre Usov (born 27 August 1977) is a Belarusian retired racing cyclist.

Usov came so close to victory at the 2005 GP Ouest-France with both himself and winner George Hincapie celebrating the win and unsure who won.

Mancebo was implicated in Operación Puerto doping case and was facing possible suspension.

The bunch went around one of the final corners too fast and Usov did not break in-time, crashing into his teammate and out of contention.

[7] Usov went to the 2008 Giro d'Italia as the nominated sprinter for Ag2r–La Mondiale, he achieved three top 10 finishes in bunch sprints.