Aleksander Dominik Kazanowski (1605 – February 1648), was a noble (szlachcic), magnate, voivode of Bracław Voivodeship in the Polish–Lithuanian Commonwealth.
Before 6 November 1646 he became a voivode of Bracław.
He married Anna Potocka. They had two daughters: Helena and Maria Anna Kazanowska (1643–1687), wife of Stanisław Jan Jabłonowski.
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