Boris Xavier Alfaro Chong (born 29 October 1988) is a Panamanian international footballer who plays as a striker for Panamanian club Costa del Este.
Alfaro started his career at San Francisco and moved abroad to play in Bolivia with Universitario de Sucre and The Strongest as well as in Moldova for FC Sheriff Tiraspol. In summer 2014, he joined Venezuelan club Zamora and moved to Peruvian side USMP in January 2015.
He returned to San Francisco in summer 2015.
Alfaro made his debut for Panama in a March 2009 friendly match against Trinidad and Tobago, his sole international to date.
His maternal grandfather, whose last name is Chong, is Chinese.