Bulgarian middle-distance runnerNot to be confused with Totka Petrova.

Tonka Ivanova Petrova (Bulgarian: Тонка Ивановна Петрова) (born 1 February 1947, Yambol) is a Bulgarian middle-distance runner.

She won a silver medal at European Indoor Championships in the 1500 metres run in Rotterdam in 1973. In 1974, she won a gold medal at the European Indoor Championships' 1500:m run in Gothenburg and a silver medal in a 4 x 392 metres relay race with Bulgaria. She also competed in the women's 1500 metres at the 1972 Summer Olympics.

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