Marilyn Elaine Van Derbur (born June 16, 1937) is the Miss Colorado 1957, 1958 Miss America pageant holder, author and motivational speaker.
She was inducted into the Colorado Women's Hall of Fame in 1996.In 2011, she was awarded the Lifetime Achievement Award.
She founded the Survivor United Network (SUN), and authored Miss America By Day: Lessons Learned from Ultimate Betrayals and Unconditional Love, which spent 13 weeks on Colorado's top ten non-fiction bestsellers list and was awarded the Writer's Digest Most Inspirational Book award (first place) in 2003.