San Basso is a Baroque style deconsecrated Roman Catholic church in central Venice, Italy; it now serves as a concert hall.
According to the Venetian historian , the church was erected in the year 1079. It was rebuilt after fires in 1105, and again in 1661, the latter to a design by Baldassarre Longhena. Located nearby the St. Mark's Clocktower, it has a side façade on the Piazza San Marco. It has four Corinthian columns and two single mullioned windows.
In 1806, during the Napoleonic occupation, the church was closed and sold to a private source. In 1847, it was ceded to the Basilica di San Marco, which used it to store marbles and sculptures until, in the 1890s, it was restored as a meeting and concert hall.