Geoffrey Fitz Peter, Earl of Essex (c. 1162–1213) was a prominent member of the government of England during the reigns of Richard I and John.
The patronymic is sometimes rendered Fitz Piers, for he was the son of Piers de Lutegareshale (born 1134, Cherhill, Wiltshire, died 14 January 1179, Pleshy, Essex), a forester of Ludgershall and Maud de Manderville (born 1138, Rycott, Oxford, England).
Geoffrey's elder brother, Simon Fitz Peter, was at various times High Sheriff of Northamptonshire, Buckinghamshire, and Bedfordshire.
In 1184, Geoffrey's father-in-law died, and he received a share of the de Say inheritance by right of his wife, co-heiress to her father.
Late in 1189, Geoffrey's wife's cousin William de Mandeville, 3rd Earl of Essex died, leaving no direct heirs.