Ignacio Beristáin, born July 31, 1939 in Actopan, Veracruz, Mexico, is a Mexican trainer in the sport of boxing. Beristain is a member of the Boxing Hall of Fame and is considered one of the greatest trainers in the history of boxing.

Beristain boxed as an amateur in the light flyweight division. He later turned professional, but was forced to retire prematurely in 1959 due to an eye injury. After retirement, he co-managed Vicente Saldivar. As a trainer in the amateur ranks, he led Mexico’s boxing teams to multiple medal wins at the 1968, 1976, and 1980 Olympic Games.

His first professional world champion was two-division title holder and hall of famer Daniel Zaragoza. He has trained several other notable boxers, including brothers Juan Manuel and Rafael Marquez and Hall of Famers Ricardo López and Humberto “Chiquita” González. He also had a brief stint in training Oscar De La Hoya when De La Hoya faced Manny Pacquiao in December 2008.

World Liberty TV interviewed Ignacio “Nacho” Beristain at the Manny Pacquiao vs. Juan Manuel Marquez New York Press Conference.