Namesakes
Italian Presidents and Prime Ministers:
1 prime minister
(prime minister) Pietro Badoglio 1943-1944 
Notable Actors and Entertainers:
1 actor
Rudolph Valentino (middle name Pietro) 1895-1926
Notable Artists:
2 painters
Pietro Perugino 1446-1523
Pietro da Cortona 1596-1669
Notable Athletes:
1 track
(track) Pietro Mennea 1952-2013
Notable Explorers and Adventurers:
1 explorer
Pierre Savorgnan de Brazza (a.k.a. Pietro) 1852-1905
Notable Musicians:
2 composers
Alessandro Scarlatti (a.k.a. Pietro) 1660-1725
Pietro Mascagni 1863-1945
Olympic Medalists:
2 silver, 1 bronze/gold
(bronze/gold) Pietro Mennea 1972; 1980 200 m; 4x400 m relay
(silver) Pietro Generali 1980 basketball
(silver) Pietro Figlioli 2012 water polo
Saints:
15 blessed, 7 saints
Saint Peter Urseolus (a.k.a. Pietro) 928-987
Saint Peter Damian (a.k.a. Pietro) 1007-1072
Blessed Peter Igneus (a.k.a. Pietro) ?-1089
Saint Peter of Anagni (a.k.a. Pietro) ?-1105
Saint Peter of Pappacarbone (a.k.a. Pietro) ?-1123
Saint Peter Pareuzi (a.k.a. Pietro) ?-1199
Saint Peter of Verona (a.k.a. Pietro) 1205-1252
Saint Peter of Sassoferrato (a.k.a. Pietro) ?-1231
Blessed Pietro Armengol 1238-1304
Blessed Peter of Gubbio (a.k.a. Pietro) ?-1250
Blessed Peter Tecelano (a.k.a. Pietro) ?-1287
Blessed Peter of Siena (a.k.a. Pietro) ?-1289
Blessed Pietro of Treja ?-1304
Blessed Pietro Cresci ?-1323
Blessed Pietro Gambacorti of Pisa 1355-1435
Blessed Pietro of Tiferno 1390-1445
Blessed Pietro Geremia 1399-1452
Blessed Pietro da Mogliano 1442-1490
Blessed Pietro Casani 1572-1647
Blessed Pietro Berno ?-1583
Blessed Pietro Paolo Navarro ?-1622
Blessed Pietro Bonilli 1841-1935