Vilniansk (Ukrainian: Вільнянськ, pronounced [wilʲˈnʲɑnʲsʲk]; Russian: Вольнянск, romanized: Volnyansk, pronounced [vɐlʲˈnʲansk]) is a city in Zaporizhzhia Oblast, Ukraine and the administrative center of Vilniansk urban hromada. Population: 14,324 (2022 estimate).

It was the administrative center of Vilniansk Raion (district) until 2020, when the raion was abolished in accordance with administrative reforms and its area merged into Zaporizhzhia Raion.

As of the Ukrainian national census in 2001, Vilniansk had a population of 16,456 inhabitants. The ethnic and linguistic composition was as follows:

Ethnic groups in Vilniansk percent Ukrainians   86.06% Russians   12.11% Belarusians   0.45% Armenians   0.38% Bulgarians   0.19% Germans   0.13%

Native languages (2001) percent Ukrainian   86.5% Russian   13.0% Belarusian   0.2% Armenian   0.1% others   0.1%

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  Industrial enterprise in Vilniansk
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  Vilnianka River