Giancarlo "Gian" Alzate Magdangal (born November 18, 1981 in Manila, Philippines), is a Filipino singer, performer, and theater actor currently signed to ABS-CBN.
A former boy band member of 17:28, he rose to prominence as one of the runners-up of Philippine Idol in 2006.
Magdangal was dubbed during the competition as the "Livewire Idol".
He is a cousin of actress and fellow singer Jolina Magdangal.