Belli is an Italian surname. Notable people with the surname include:
Adriano Belli (born 1977), Canadian football player Agostina Belli (born 1947), Italian actress Alex Belli (born 1990), Italian model, media personality and actor Andrea Belli (1703–1772), Maltese architect and businessman Carlos Germán Belli (1927–2024), Peruvian poet of Italian parentage César Belli (born 1975), Brazilian footballer Daniel Belli (born 1963), Canadian sports shooter Domenico Belli (died 1627), Italian composer Edo Belli (1918–2003), American architect Emily Belli (born 1977), American physicist Francesco Belli (born 1994), Italian footballer Gabriella Belli (born 1952), Italian art historian Gioconda Belli (born 1948), Nicaraguan poet and writer Giovanni Battista Belli-Bernasconi (1770–1827), Russian architect active in Saint Petersburg Giovanni Battista de Belli (1630–1693), Italian Roman Catholic Bishop Girolamo Belli (1552 – c. 1620), Italian composer Giulio Belli (c. 1560 – 1621 or later), Italian composer Giuseppe Gioachino Belli (1791–1863), Italian poet, famous for his sonnets in Romanesco dialect Giuseppe Belli (singer) (d. 1760), sometimes referred to as Giovanni Belli, Italian castrato singer Humberto Belli (born 1945), Nicaraguan politician and writer John Belli (died 1809), United States Army Quartermaster General Laura Belli (born 1947), Italian actress and singer Marisa Belli (1933–2017), Italian stage, television and film actress Mary Lou Belli, American television director and writer Melvin Belli (1907–1996), American lawyer, writer and actor Mihri Belli (1916–2011), Turkish politician Paolo Belli (born 1962), Italian singer and television presenter Peter Belli (1943–2023), Danish singer and actor Pierangelo Belli (1944–2026), Italian footballer Pierino Belli (1502–1575), Italian soldier and jurist Remo Belli (1927–2016), American jazz drummer Valerio Belli (c. 1468 – 1546), Italian medallist and engraver Willam Belli (born 1982), American actor and drag queen Wladimir Belli (born 1970), Italian cyclist