Miss Perú 1966 was held on 1966-07-04 at Teatro Alcazar, Miraflores, with 16 entrants. Madeline Hartog-Bel (Arequipa) won the main title and was designated Miss Peru Universe 1966, while Martha Quimper Suárez (Distrito Capital) was named Miss International Peru 1966. The winners were to represent Peru at Miss Universe and Miss International, with other finalists entering additional pageants.