Capponi is a surname. Notable people with the surname include:
Carla Capponi (1918–2000), Italian politician Claudio Capponi (born 1959), Italian film composer Filippo Fasio Capponi (died 1570), Italian Roman Catholic prelate Gino Capponi (1792–1876), Italian statesman and historian Giuseppe Capponi (1832–1889), Italian operatic tenor Luigi Capponi (1582–1659), Italian Roman Catholic cardinal Michael Capponi (born 1972), American businessman Pat Capponi (1949–2020), Canadian author Pier Paolo Capponi (1938–2018), Italian actor and screenwriter Piero Capponi (1447–1496), Italian statesman and historian
See also Caponi, another surname