Krzyzewski married his wife, Carol "Mickie" Marsh, in the Catholic chapel at West Point on the day of his graduation in 1969. They have three daughters and nine grandchildren. According to "The Wall Street Journal," she was the only person who could persuade him to stand down during the 1994–95 season. She actually went as far as to give her husband an ultimatum–if he wanted to come home on what would prove to be his final day of coaching that season, he needed to skip practice and go to the doctor. His grandson, Michael Savarino, was a walk-on player at Duke for the 2019–20 season.