Giangiacomo
Giangiacomo is an Italian given name, a combination of the names Gian and Giacomo. Notable people with the name include:
- Giangiacomo Borghese, Italian politician, fascist governor of Rome
- Giangiacomo Calovini, member of the Chamber of Deputies of Italy
- Giangiacomo Feltrinelli, Italian publisher, businessman and political activist
- Giangiacomo di Gambarana, Roman Catholic prelate, Bishop of Albenga
- Giangiacomo Guelfi, Italian operatic baritone
- Giangiacomo Magnani, Italian professional footballer
- Giangiacomo Moretti, Italian painter
- Giangiacomo Paleologo, Margrave of Montferrat
- Giangiacomo Teodoro Trivulzio, Italian Cardinal