Petrovouni (Greek: Πετροβούνι, meaning "rocky mountain", before 1927: Βασταβέτσι - Vastavetsi[2]) is a village in the municipal unit of Tzoumerka (Ioannina, Epirus), Greece.

It is situated on a mountainside of the Athamanika mountains, above the left bank of the river Arachthos, at 1,030 m elevation.

It is 3 km north of Chouliarades, 9 km west of Syrrako and 17 km southeast of Ioannina.

Its population is 87 people (2021 census).

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