Guillermo Rojas Rumilla (born 29 March 1983) is a Mexican former football winger. He last played for Cafetaleros de Tapachula of the Liga MX. Rojas made his professional debut with Puebla in 2003. He is considered to be one of the fastest footballers in the world. He was selected by José Guadalupe Cruz as one of the squad members for 2009 FIFA Club World Cup. He played the first match against Auckland City FC, game which Atlante won 3-0. Days later, Atlante would have to face FC Barcelona. Rojas' scored his first goal in official competitions, but Atlante lost the match 1-3.