The camp comic, who has had little TV work since signing to the BBC on a multi-million pound deal last year, will host the event at London's Theatre Royal, Drury Lane on 17 April. It will be broadcast on BBC1.
He said, "Obviously being asked to host the Bafta awards is a huge thrill, not to mention a lot easier than sitting in the audience pretending to be pleased for the winners.
"However, the job does come with its own worries - will I be able to pronounce all the names? Will I be able to go for two hours without a drink? Will I be able to announce the nominees for entertainment performance without spitting?"
Nominations for the awards will be announced on 14 March. Davina McCall hosted last year's awards at which winners included The Office, Little Britainand Jonathan Ross.
Norton's first BBC project, Strictly Come Dancingspin-off Strictly Dance Fever, for set to launch later on BBC1 later this year.