Maglione has been president of the Uruguayan Olympic Committee (Comité Olímpico Uruguayo, COU) since 1987.[3] In July 2009, he was elected President of FINA, the International Swimming Federation.[4] As of July 2013, he is about to be reelected for that post.[5][needs update]
In September 2012 Maglione was reelected president of the COU for the period 2012–2016.[6]