Angie Sage (born 20 June 1952) is an English author of children's literature, renowned for her captivating series such as the Septimus Heap series, the TodHunter Moon trilogy, and the Araminta Spook series (known as Araminta Spookie in the United States). Angie Sage embarked on her creative journey studying illustration and graphic design, which laid the foundation for her early career in illustrating children's books before she transitioned into writing them.

Her monumental work, Septimus, marked the beginning of a saga that continues to enchant readers worldwide. Growing up in Thames Valley, London, and Kent, Sage was born into a family where creativity was nurtured; her father was a publisher who would bring home blank books for her to fill with pictures and stories. Initially setting her sights on medicine, Sage pivoted to the arts, attending Art School in Leicester where she studied Graphic Design and Illustration. This educational background paved the way for her illustrious career in both illustrating and writing children's books. Angie Sage's passion for storytelling and her innovative use of magical themes distinguish her work in the realm of children's literature.