Stefano Delle Chiaie (13 September 1936 – 10 September 2019) was an Italian neofascist activist.
He was the founder of Avanguardia Nazionale, a member of Ordine Nuovo, and founder of Lega nazionalpopolare.
He went on to become a wanted man worldwide, suspected of involvement in Italy's strategy of tension, but was acquitted.
He was a friend of Licio Gelli, grandmaster of P2 masonic lodge.
He was suspected of involvement in South America's Operation Condor, but was acquitted.
He was known by his nickname caccola (shorty) as he was five feet tall - although he stated that originally, the nickname came from his very young involvement, at age 14, in the Italian Social Movement (MSI, a neo-fascist party founded after the war); the name is not particularly flattering as caccola, in Italian, really means "booger".