César Soto Esquivel (born September 17, 1971) is a Mexican retired professional boxer and is a former WBC featherweight champion.

In July 1993, César knocked out future lightweight champion, José Luis Castillo in two one-sided rounds, becoming the first man to defeat him.

In May 1999, Soto got another title shot against Espinosa at the Equestrian Center, El Paso, Texas, this time winning a controversial unanimous decision.

Soto lost the WBC title in his first defense in a unification bout with Lineal/WBO champion Naseem Hamed via a unanimous decision at the Joe Louis Arena, Detroit, Michigan in October 1999.

Soto continued his career despite losing more than he won, until finally retiring in 2011 with a record of 63-24-3 with 43 KOs.