Anna Sewell (; 30 March 1820 – 25 April 1878) was an English novelist. She is well known as the author of the 1877 novel Black Beauty, her only published work, which is now considered one of the top ten best selling novels for children, although it was intended at the time for an adult audience. She died only five months after Black Beauty's publication, having lived long enough to see her only novel become a success.
Sewell was born on 30 March 1820 in Great Yarmouth, Norfolk, into a devout Quaker family. Her father was Isaac Phillip Sewell (1793–1879), and her mother, Mary Wright Sewell (1798–1884), was a successful author of children's books. She had one sibling, a younger brother named Philip. The children were largely educated at home by their mother due to a lack of money for schooling.