Monticelli is an Italian surname. Notable people with the surname include:
Adolphe Joseph Thomas Monticelli (1824–1886), French painter Angelo Monticelli (1778–1837), Italian painter Angelo Maria Monticelli (c. 1710–1758), Italian opera singer Daniele Monticelli (born 1970), Italian semiotician, translation scholar and translator Francesco Saverio Monticelli (1863–1927), Italian zoologist Mario Monticelli (1902–1995), Italian chess player Teodoro Monticelli (1759–1845), Italian geologist