Alfonso Blanco Parra (born 2 February 1986) is a Venezuelan professional boxer.

As an amateur, he competed at the 2008 Summer Olympics and won the middleweight silver medal at the 2007 World Championships.

Blanco won the 2006 South America title against Carlos Góngora.

At the world championships Blanco beat Ireland's Darren Sutherland, Germany's Konstantin Buga and Olympic gold medalist Bakhtiyar Artayev to reach the finals at middleweight where he was defeated by Russian defending champion Matvey Korobov PTS 4:29.

2008 (as a middleweight) He is signed to Oscar De La Hoya's Golden Boy Promotions.