Benedykt Wiszowaty (Prussia c.1650 – Kosinowo after 1704) was a Polish Socinian author and publisher.
He was the great-grandson of Fausto Sozzini, grandson of Stanisław Wiszowaty, and son of Andrzej Wiszowaty Sr. (Latin: Andreas Wissowatius) and Aleksandra Rupniowska. Benedykt married Katarzyna Przypkowska and was father of Andrzej Wiszowaty Jr. who in 1724 became lecturer at the Unitarian College in Cluj.
He edited and published The Bibliotheca antitrinitariorum, or Antitrinitarian Library, in Freistadt, Austria, in 1684, from the work of Christopher Sandius, Amsterdam, who had died 4 years earlier. Some of the material had already appeared in the Bibliotheca Fratrum Polonorum of 1668 (not 1656).