Queirolo is a surname. Notable people with the surname include:
Elisa Queirolo (born 1991), Italian water polo player Fabio Queirolo (1861-1901), Paraguayan journalist and diplomat Francesco Queirolo (1704–1762), Italian Genoese-born sculptor José Martínez Queirolo (1931–2008), Ecuadorian playwright and narrator Santiago Queirolo, Peruvian pisco producer