Aveline de Clare, Countess of Essex (c. 1178 – 1225) was an English noble.
She was a daughter of Roger de Clare, 2nd Earl of Hertford, and his wife, Matilda de St. Hilaire. Aveline married twice. Her first husband, William de Munchensy, died in 1204. She was remarried by 29 May 1205, to Geoffrey fitz Peter, Earl of Essex, as his second wife.[1] She was widowed a second time on 14 October 1213.