Jadwiga Woloszynska (5 April 1882 in Nadwórna - 30 August 1951 in Kraków) was a Polish botanist known for studying algology, limnology, and paleobotany.
She identified new types and species of algae and studied lakes in Poland, Lithuania, Ukraine, Java, Sumatra and Africa The standard author abbreviation Wolosz.
is used to indicate this person as the author when citing a botanical name.