Cveta Mirnik (27 November 1951 – 21 May 2021) was a Slovenian costume designer in the 1970s. She received two times the Borštnik Award for costume designing.She collaborated with almost all Slovenian theaters and equipped 50 productions with costumes. She was a longtime member of the Slovenian Designers' Association. She also created costumes for film Deseti brat and for television series Vehovčev Jurij. She had solo exhibited in Žalec, Celje and Maribor. Her works have also been shown in important review exhibitions of theatrical scenography and costume designing in several countries.