'''Gastaldi''' is a surname. Notable people with the surname include:
*Andrea Gastaldi (1826–1889), Italian painter *Bartolomeo Gastaldi (1818–1879), Italian geologist and palæontologist *Ernesto Gastaldi (born 1934), Italian screenwriter *Giacomo Gastaldi (c. 1500–1566), Italian cartographer, astronomer and engineer *Giantommaso Gastaldi (1597–1655), Italian Roman Catholic bishop *Girolamo Gastaldi (1616–1685), Italian Roman Catholic cardinal *Nicol Gastaldi (born 1990), Argentine alpine skiers *Román Gastaldi (born 1989), Argentine decathlete *Sebastiano Gastaldi (born 1991), Argentine alpine skier *Valeria Gastaldi (born 1981), Argentine singer
== See also == *Gastaldi synthesis, method for the organic synthesis of pyrazine
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