David Muir and Deborah Roberts bid an emotional farewell on Friday when they revealed a big change to their 20/20 show.

Heidi Gutman/ABC News David Muir is the anchor and managing editor of ABC World News Tonight with David Muir, the most-watched newscast in the U.S., and co-anchor of ABC’s 20/20. Muir’s ...

Fellow longtime anchor David Muir was among the many journalists who shared their surprise with messages bidding Lester farewell (he will be moving to a full-time position on Dateline).

David Muir was spotted in a small community near the Orlando, Fla., area. So why is he in Orlando? Here's what we know.

Lester Holt's ratings rival David Muir has paid tribute to the outgoing NBC Nightly News anchor in a glowing tribute post. The host of ABC World News Tonight penned the homage Monday ...

In a new "20/20" episode, "The Code Breakers," airing March 7 at 9 p.m. ET on ABC, and streaming the next day on Hulu, David Muir explores the innovative DNA technology Othram used to crack the ...

David Muir has reportedly won the long-running feud with fellow ABC News anchor George Stephanopoulos, according to a TV insider. Oliver Darcy, a former CNN journalist and founder of the news site ...