Anne Isabella, Lady Ritchie, née Thackeray (1837–1919) was an English novelist and biographer. She was the eldest daughter of the English novelist William Makepeace Thackeray and the step-aunt of the English novelist and essayist Virginia Woolf.
In 1863, Anne Isabella published The Story of Elizabeth with immediate success. She is best remembered of her novels Old Kensington (1873) and From an Island (1877,) in addition to her collections of modern fairy stories Five Old Friends and a Young Prince (1868) and Bluebeard’s Keys (1874.) Her writing is distinguished by the use of classic folktales and fairy stories such as Sleeping Beauty, Cinderella, and Little Red Riding Hood to describe contemporary situations and occasions.
Anne Isabella also wrote biographical introductions to her father’s complete works as well as memoirs of the literary figures she had known in her youth: Records of Tennyson, Ruskin and Robert and Elizabeth Browning (1892) and Chapters from Some Memoirs (1894,) among others.