Totka Nikolaeva Petrova (Bulgarian: Тотка Петрова, born 17 December 1956) is a retired female middle distance runner who represented Bulgaria in the 1970s and the early 1980s.

Also, she continued a strong tradition of Bulgarian 800 metres runners, who had taken medals at the previous European Indoor Championships in 1972, 1973, 1975 and 1976.

Other than Petrova, these medals were taken by Svetla Zlateva, Stefka Yordanova, Rositsa Pekhlivanova, Nikolina Shtereva and Lilyana Tomova.

[7] In August 1979 Petrova tested positive for anabolic steroids and was subsequently banned from sport for 8 months.

Strong rivals in this event include Rumyana Chavdarova and Vania Gospodinova.