- Source of Wealth: TV, Journalism
- Age: 55
- Birth Place: Wyckoff, New Jersey
- Marital Status: Married (Daniel John Gregory)
- Full Name: Martha Bowes MacCallum
- Nationality: United States
- Date of Birth: January 31, 1964
- Occupation: Journalist
- Education: St. Lawrence University.
- Children: 3
Maccallum is known for her passion and dedication in covering the most important events in the nation. She covered the 2004 and 2008 presidential elections. She also covered the mid-term election which took place in 2010. She is one of the co-anchors for the coverage of the funeral of Pope John Paul II. Maccallum is also known for her interviews with many influential people including David Petraeus, Chris Christie and John McCain.
At the time of writing in 2012, Martha Maccallum is estimated to be worth $8 million.