Roberts has been contributing anchor for the show for the past year. She succeeds Amy Robach, who departed the network in January after tabloid-headlined scrutiny of her relationship with T.J. Holmes, her co-host on GMA3, who also left the network.
Roberts also will continue to to report across network platforms as senior national affairs correspondent.
Roberts has been reporting for 20/20 since 1995, recruited by her mentor Barbara Walters to join the network. She reported across network news shows, and was a substitute anchor on Good Morning America and guest co-host on The View. The show is now in its 26th season.
ABC News president Kim Godwin wrote in a memo to employees that Roberts “is a skilled investigative journalist, oftentimes trekking across the country to conduct hard-hitting interviews providing viewers with relevant, insightful information. Deborah is an empathetic reporter, bringing humanity to every story.”
Roberts, who is married to Today co-host and weather anchor Al Roker, received a Peabody Award for the 20/20 special Say Her Name: Breonna Taylor. She was inducted into the Broadcasting and Cable Hall of Fame in 2023.