Martha MacCallum (born January 31, 1964) is a news anchor for Fox News. She joined the network in 2004. She previously hosted The Live Desk with Trace Gallagher and 'America's Newsroom' alongside Bill Hemmer. MacCallum was also often the fill-in anchor for Megyn Kelly while The Kelly File was still running. In January 2017, MacCallum became anchor of Fox News's temporary program, The First 100 Days, which was later reformatted into a permanent show called The Story with Martha MacCallum. MacCallum also had a weekly segment with Bill O'Reilly on The O'Reilly Factor.
Working for Fox, MacCallum has covered the 2004, 2008, 2012, and 2016 presidential elections. She co-anchored the coverage of the visit of Pope Francis to the United States and the funeral of Pope John Paul II. Her interviews with US President Barack Obama, General David Petraeus, John McCain, New Jersey Governor Chris Christie, Laura Bush, and others have been featured on her programs at Fox.