Dandi Daley Mackall is an American Christian author with around 400 of her works published for adults and children. Some of her works are the Winnie the Horse Gentler series and the Blog On series, as well as many others. She collaborated with Sigmund Brouwer and Melody Carlson to take part in creating the Degrees of Guilt series and then with Jeff Nesbit and Melody Carlson in the Degrees of Betrayal series.
Mackall started her writing career when at ten-years old when she entered and won her first writing contest. Her paper was titled "Why I Want to be Batboy for the Kansas City A's". Since then she has published over 400 books for adults, teens, and children. She now lives with her husband, Joe, in Ohio. They have three children: Jen, Katy, and Dan. Mackall continues to appear on radio broadcasts, and has made several appearances on TV as well.