Pierantonio Clementi was an Italian skier who specialised in the biathlon, becoming a national champion in 1975 and 1976. Throughout the 1970s Clementi competed at multiple international competitions, including four editions of the World Championships, as well as two Olympic Games. At the 1972 Olympics in Sapporo he placed 31st in the individual event, finishing just under 10 minutes behind the race winner after amassing six penalties. Four years later he placed 23rd in the same event at the Innsbruck Games, in addition to finishing sixth in the relay event.