The club said the former Juventus, Chelsea, Inter and Italy boss has signed a contract running until June 2027.
“Napoli is a club of huge importance on the international stage,” said Conte.
“I’m happy and excited by the idea of taking my seat in the Napoli dugout.
“I can certainly promise one thing: I’ll give my all to develop the team and the club.
“I’m fully committed to the task at hand, as are my staff.”
Napoli got through three coaches last season during their dire defence of the Serie A title they won in the 2022-23 campaign.
Former Italy midfielder Conte won league titles during his spells in charge of Inter, Chelsea and Juve, where he claimed three Serie A crowns on the trot.
His last job was an unsuccessful stint at Tottenham Hotspur.
“I’m so proud that Antonio Conte is Napoli’s new coach,” said Napoli chairman Aurelio De Laurentiis.
“Antonio is a top coach and a leader, so I’m convinced that we’ll be able to rebuild the foundations in the way that we need to following the conclusion of the cycle that led us to Scudetto glory last year after many years at the top of Italian football.
“An important, new chapter in Napoli’s history gets under way today.”
ANSA
