Andrea Castellani (born 15 May 1972 in L'Aquila) is a former Italian rugby union player and a current coach. He played as a prop. Castellani played for L'Aquila Rugby (1993/94–1995/96), where he won the Italian Championship in 1993/94, Benetton Treviso (1996/97), winning once more the Italian Championship, L'Aquila Rugby (1997/98) and Rugby Roma Olimpic (1998/99–2002/03), winning his third national title for a different team in 1999/2000. After retiring from playing, he became assistant coach for Unione Rugby Capitolina, from 2003/04 to 2007/08.