"Welcome aboard, Katie. Anchors aweigh!" Yahoo! Chief Executive Officer Marissa Mayer said in a statement.
"Today, I am incredibly excited to announce that Katie Couric is joining Yahoo! as our global anchor.
"Starting in early 2014, Katie will lead a growing team of correspondents at Yahoo! News who will cover the world's most interesting stories and news-makers. I've always respected Katie for her thoughtful, charismatic approach to journalism," Mayer said.
"From pivotal coverage of natural disasters and historic elections to the royal wedding and the Olympic Games, groundbreaking interviews with heads of state and leading taste-makers, her experience is unmatched.
"Katie is dynamic, savvy and has a way of connecting with viewers that I really admire. In addition to being the face of Yahoo! News and shooting features for our homepage, Katie will continue to host her syndicated daytime talk show, 'Katie.'"