Righetti is an Italian language surname. Notable people with the surname include:

• Alex Righetti (born 1977), Italian former basketball player
• Amanda Righetti (born 1983), American actress and film producer
• Caryl Righetti (born 1984), Swiss footballer
• Dave Righetti (born 1958), American baseball coach and former player, son of Leo Righetti
• Francesco Righetti, also known in Spanish as Francisco Righetti (1835–1917), Swiss architect
• Geltrude Righetti (1793–1862), Italian opera singer
• Joe Righetti (born 1947), former American football player
• Leo Righetti (1925–1998), American baseball player, father of Dave Righetti
• Mario Righetti (born c. 1590), Italian painter
• Michael Righetti (born 1968), Urban and Regional Planner, philosopher and cyclist
• Mattia Righetti (born 1980), Italian rower
• Oscar Righetti (born 1948), retired Italian footballer
• Oscar Righetti (born 1960), Canadian Union President/United Steelworkers of America/Sherwin Williams
• Pier Giorgio Righetti (born 1941), Italian chemist
• Pietro Righetti (1899–2001), Italian racing cyclist
• Samuele Righetti (born 2001), Italian footballer
• Timo Righetti (born 1998), Swiss footballer
• Ubaldo Righetti (born 1963), Italian footballer