Filippo Magnini (Italian pronunciation: ; born 2 February 1982) is an Italian retired competitive swimmer who was twice 100 metres freestyle World champion and three times European champion at that distance.
Magnini was born in Pesaro, Marche.
As a youth he played basketball, soccer, beach volleyball and tennis, but shifted to swimming at the age of ten. His first cap with Italian Swimming National Team was in 1998. Raised as a breaststroker, after 2000 he dedicated totally to freestyle swimming, soon to achieving noteworthy results. Magnini gained his first international honour in 2003, with a silver medal in 100 m freestyle at the European Swimming Championships (short course) in Dublin. He won three more gold medals (in the 100 m, 4×100 m relay and 4×200 m relay freestyle) and one bronze medal at the 2004 European Championships (long course) in Madrid. At the 2004 Summer Olympics Magnini won the bronze medal in the 4×200 m freestyle relay, achieving 5th place in the 100 m freestyle. His steady rise reached its highest point at the 2005 World Aquatics Championships, where he won the gold medal in the men's 100 m freestyle with the time of 48.12, then the all-time second fastest behind Pieter van den Hoogenband's world record.