The 50-year-old journalist and TV host was first named the anchor and managing editor of World News Tonight (rebranded from simply World News ) in June 2014.
On September 1, 2014 he officially appeared in his debut broadcast as the World News Tonight anchor, a role he has since held to acclaim, consistently taking the ABC news hour to sky-high ratings and ranking as one of the most watched news anchors on TV nationwide.
David reflected on the special milestone on his social media with a throwback photo of himself sitting on a news desk as a young boy with his father Ronald Muir beside him.
"Ten years ago today I started anchoring World News Tonight ," he penned. "I'm so grateful to this team and to the viewers. I've been at this for a bit — my Dad and me, 1987 — our on-air chemistry was off the charts."
His many friends and colleagues shared supportive messages in response. Al Roker commented: "Our 6 degrees of Syracuse. I worked there a little earlier, 1974-1976, but you were influenced by the same folks who helped shape me. You do your family and CNY proud every day." His close friend Kelly Ripa wrote: "This needs to be an off social media conversation, but congratulations on the fastest 10 years ever. Wow!"
Robin Roberts added: "Incredibly proud of you David! Can't wait for the next ten and beyond," with Ginger Zee gushing: "What a beautiful moment to reflect — and I can't wait to see what happens in the next ten years." Lara Spencer even joked: "I love this so much. Green in your color."
David first got his start in journalism in college, anchoring local programs at his alma mater, Ithaca College. He interned at WTVH-TV in Syracuse when he was in college.
He graduated magna cum laude with a journalism degree in 1995, and was a full-time reporter for WTVH-TV from 1994-2000. David was quickly deemed one of the best local reporters in the Syracuse area for his fearless international reporting.
After a stint with ABC-owned WCVB from 2000-2003, he was made part of the ABC News reporting team and was even made an anchor on their early morning news program, World News This Morning .
In 2007, he was made the co-anchor of World News Saturday and was made the lead anchor of the weekend broadcasts in 2012, which was renamed to World News with David Muir . In 2013, he was promoted to co-anchor of 20/20 alongside Elizabeth Vargas. Elizabeth was succeeded by Amy Robach , who departed in 2023 and was succeeded in turn by Deborah.
Get updates delivered to you daily. Free and customizable.
It’s essential to note our commitment to transparency:
Our Terms of Use acknowledge that our services may not always be error-free, and our Community Standards emphasize our discretion in enforcing policies. As a platform hosting over 100,000 pieces of content published daily, we cannot pre-vet content, but we strive to foster a dynamic environment for free expression and robust discourse through safety guardrails of human and AI moderation.