Mikołaj Wisznicki was a Polish painter, military officer and one of the founders of Polish Sightseeing Society (Polskie Towarzystwo Krajoznawcze).

Trained in the natural sciences at the University of Kyiv, he was primarily known as an illustrator of children's literature. In addition, he painted oil and watercolor landscapes and equine scenes. Later, after study in the workshop of Konrad Krzyżanowski, he also practiced portrait painting.