Ceccon on Monday evening won in 52.00 seconds ahead of China’s Xu Jiayu who took the silver medal and American Ryan Murphy in third.
It was his second medal of the week after bronze in the 4x100m free relay.
“Ever since I was a boy, I knew that I could win this medal and today is that day,” said the 23-year-old.
“I couldn’t be happier.”
Winning an Olympic gold “has always been my dream”, he said.
Ceccon, who won the world championship in 100m in Budapest in 2022, won Italy’s second gold medal after Nicolò Martinenghi’s victory in the 100m breaststroke on Sunday.
ANSA