Rubén Xaus (born 18 February 1978 in Barcelona, Catalonia, Spain) is a retired motorcycle road racer.

His father, who competed in amateur mountain bicycle races, gave Xaus his first motorcycle at the age of five, a Montesa 25cc.

In 2000 he rode one of the official Ducati factory team Supersport bikes, finishing seventh and taking one victory.

A pair of 2nds at Assen (helping Bayliss to clinch the title) and a second win at Imola gave him sixth in the championship.

The team was grossly under funded and could not afford testing time, but Xaus adapted better to the situation than teammate Hodgson.

Consistent points-scoring performances and a first podium at Qatar saw him snap up the ‘Rookie of the Year’ title and 11th place overall in the championship standings.

He ended the 2007 season 6th with a total 201 points (next behind the former world champion Troy Corser), scoring the team's first victory in Valencia.