Named after the Jubanico family that founded the church in the ninth century. Rebuilt in the seventeenth century by Antonio Barbaro. The façade by Guiseppe Sardi is a beautiful example of Venetian Baroque, decorated with reliefs by Josse Le Court that represent sea battles fought by the Barbaro Family, including the one in which Antonio Barbaro was discharged because of his incompetence. Contains a small museum.