Willy Alexander Rivas Asin (born 4 June 1985) is a Peruvian former professional footballer who played as a right-back.
Rivas made his Descentralizado league debut in the 2005 season playing for Universitario de Deportes.
On 10 June 2011 it was announced that Rivas would join Sporting Cristal on loan for the rest of the 2011 season.