Miss Universe 1985 was the 34th Miss Universe pageant, held on 15 July 1985 at the James L. Knight Convention Center in Miami, Florida, United States. Seventy-nine contestants competed in the pageant. Deborah Carthy-Deu of Puerto Rico was crowned by Yvonne Ryding of Sweden.

The James L. Knight Center is a contemporary entertainment and convention complex located in Downtown Miami, Florida. Located within the Miami Central Business District, the venue opened in 1982. The complex is named after famed newspaper publisher, James L. Knight. Since its opening, the complex has hosted many business, entertainment and political events. Annually, it hosts Miami Dade College graduation ceremonies. It also hosted Miss Universe in 1984 and 1985, Miss USA in 1986 and Miss Teen USA in 1985 and the OTI Festival in 1989.