Stefka Evstatieva (Bulgarian: Стефка Евстатиева) (born 7 May 1947) is a Bulgarian operatic soprano. Born in Ruse, People's Republic of Bulgaria, she studied voice at the State Academy of Music in Sofia with (Елена Кисельова). She began her career with the Ruse Opera where she made her debut as Amelia in Un ballo in maschera and sang there from 1971 to 1979. In 1974 Stefka Evstatieva won the second prize at the International Tchaikovsky Competition in Moscow. (No first prize was awarded). In 1978 she won the Grand Prize of Belgian Radio & TV Belcanto Competition; in 1979 Grand Prize and Golden Ring in the Young Singers Competition in Sofia; and in 1982 the Best Performance Award at the Arena di Verona.