Annie Chambers Ketchum (religious name, Sister Amabilis; November 8, 1824 – January 27, 1904) was an American educator, lecturer, and writer. She was a member of the New York Academy of Sciences and became a Capitular Tertiary of St. Dominic in her later years. Chambers served as principal of the High School for Girls in Memphis, Tennessee, where she established a girls school. She opened a normal school for advanced pupils in Georgetown, Kentucky.