Hilda Villegas Castrejón (26 February 1931 – 1 August 2012) was a Mexican surgeon and a pioneer in electron microscopy.
[1] Hilda's father, Andrés Villegas Reyes, was a medical surgeon graduated from "Escuela Medico Militar (S.D.N.)"
She graduated in 1955 as a medical surgeon from the Faculty of Medicine of the National Autonomous University of Mexico (UNAM).
[2] She earned a pathology fellowship at Presbyterian / St. Luke's Medical Center and Columbus Hospital in Chicago.
Villegas was in charge of founding the electron microscopy sections, and at the INR she held the position of research director.