Diego Abatantuono (born 20 May 1955) is an Italian cinema and theatre actor, comedian and screenwriter, three-time winner of the Nastro d'Argento.

His first successful recurrent role, co-written with Giorgio Porcaro [it], was that of a poorly cultivated immigrant from southern Italy in Milan ("Terrunciello"), who used to speak a very personal form of slang.

The first real starring role is obtained at the insistence of prize-winner actress Monica Vitti,[1] who wanted him in Il tango della gelosia.

Twenty years after, he reprised all three roles for the 2006 sequel Eccezzziunale...veramente - Capitolo secondo... me, which featured cameos from then-current Milan players Paolo Maldini, Massimo Ambrosini, Alessandro Costacurta, Dida, Andriy Shevchenko, and Gennaro Gattuso in the 2005–06 UEFA Champions League.

After this role, Abatantuono founded his own production company, Colorado Film, thanks to which he reaffirmed himself as one of the most interesting actors of the new Italian cinema, with Giuseppe Bertolucci's I cammelli (1988) and Gabriele Salvatores' film cycle, which consecrated him definitively: Marrakech Express (1989), Turné (1990), the Oscar-winning Mediterraneo (1991), Puerto Escondido (1992), Nirvana (1997), Amnèsia (2002), I'm Not Scared (2003), Happy Family (2010) and Volare (2019).