Beniamino Poserina (born 6 November 1970) is a retired male decathlete from Italy.

He competed for his native country at the 1996 Summer Olympics in Atlanta, Georgia.

A member of Fiamme Azzurre Roma he set his personal best score (8169 points) in the men's decathlon on 6 October 1996 in Formia.

That mark has been national record for 26 years.

He has won 8 times the individual national championship.