Isidro Pérez (May 24, 1964 – January 9, 2013) was a Mexican professional boxer.
In May 1986, Isidro won the Mexican National Light Flyweight Championship by beating veteran Jorge Cano.
In his first World Championship attempt he lost a very disputed twelve-round decision to Jung-Koo Chang in Chungmu Gymnasium, Daejeon, South Korea.
On August 18, 1990 Pérez won the WBO Flyweight Championship by upsetting Puerto Rico's Angel Rosario with a twelfth round T.K.O.
Perez's friends and family have not heard from him in months previous to reporting him missing and he has not cashed a pension check since September 2012.