Rubén Xaus (born 18 February 1978 in Barcelona, Catalonia, Spain) is a retired motorcycle road racer. During his career he competed in both the Superbike World Championship and the MotoGP. He is nicknamed 'Spider-Man', as his lanky frame leads him to hang over the bike in an unusual way.
His father, who competed in amateur mountain bicycle races, gave Xaus his first motorcycle at the age of five, a Montesa 25cc. Aged 14 he was racing dirt-bikes, but his father convinced him to turn his attentions towards road racing. Xaus took part in the 125cc Catalan Championship, the 125cc Solo Moto Criterium, and that same year he took victory in the 80cc Catalonia Supermoto Championship.
In 1994 he competed in the Open Ducados Supersport series in Spain – finishing 17th place, improving to third the following year. In 1995 he entered the FIM Thunderbike trophy and contested four 250cc Grand Prix. Xaus finished sixth in Thunderbike in 1996, moving to World Supersport in 1997 taking 17th overall.