Ela of Salisbury, 3rd Countess of Salisbury (1187 – 24 August 1261) was a wealthy English heiress and the suo jure Countess of Salisbury, having succeeded to the title in 1196 upon the death of her father, William FitzPatrick, 2nd Earl of Salisbury. Her husband William Longespée, an illegitimate half-brother of kings Richard I of England and John of England assumed the title of 3rd Earl of Salisbury by right of his marriage to Ela, which took place in 1196 when she was nine years old.