The music legend and co-writer Bernie Taupin scooped the Best Original Song for I’m Gonna Love Me Again from Rocketman.
He previously won in 1995 for Can You Feel the Love Tonight from The Lion King. Picking up his second Academy Award, he said: “To my beautiful boys who are watching this in Sydney, how much do I love you? Daddy loves you.”
He and husband David Furnish are parents to Elijah, seven, and Zachary, nine.
He later attended his own Elton John AIDS Foundation party, which raised more than £6.4million, and told how he had FaceTimed his children.
Elton, 72, said: “I just wanted to say that because I am so moved, so overwhelmed, this means so much. I actually have two Oscars now, one each for my boys.