Efrén Llarena is a Spanish rally driver born 26 May 1995 in Espinosa de los Monteros, Burgos, Castilla y León. In 2021 he finished runner up in the European Rally Championship behind Andreas Mikkelsen whilst driving his long term co-driver to the co-driver's championship title. The following year in 2022, Llarena won the European Rally Championship, securing the title with two rounds remaining in the championship.