Anna Lee Waldo is an American historical fiction author, renowned for her novel Sacajawea.

Her interest in the subject began as a child when she collected spear points on the shores of Whitefish Lake in Montana and listened to stories of Blackfeet and Crow grandmothers. It took her ten years to write about the first woman to go with a military contingent, with a baby in a cradleboard, halfway across the North American continent.

Anna Lee is now writing a sequence of books that began in Wales in the twelfth century called the Druid Circle series. These books are based on the elusive history of the son of Prince Owain Gwynedd, named Madoc, who came to America in 1170.