Altieri is an Italian surname. It may refer to:
Altieri family, a noble Italian family from Rome, whose most notable exponent was Pope Clement X (r. 1670–1676);
Persons Notable people with the surname include: Angelo Altieri (died 1472), Italian Catholic bishop Giambattista Altieri (1589–1654), Italian Catholic cardinal Vincenzo Maria Altieri (1724–1800), Italian Catholic cardinal Carlos Delgado Altieri (born 1960), Puerto Rican politician Charles Altieri, American academic Dario Altieri, American researcher from Philadelphia Elena Altieri (1910–1997), Italian actress Erik Altieri, American marijuana activist John Altieri (1969–2008), American singer and actor Kevin Altieri, American television director Lodovico Altieri (1805–1867), Italian Catholic cardinal Luis Altieri (born 1962), Argentine artist and yogi María Meléndez Altieri (born 1950), Puerto Rican politician Maria Luisa Altieri Biagi (1930–2017), Italian scholar and writer Michel Altieri (born 1978), Italian singer and actor Miguel Altieri, American academic Mitchell Altieri, American film director Willie "Two-Knife" Altieri (1891–1970), American mobster
See also Cesar Altieri Sayoc Jr., an alleged attempted U.S. serial mail bomber Palazzo Altieri, palace in Rome