Jacques Dewatre (5 June 1936 – 14 December 2021) was a French diplomat and politician.

Dewatre studied at the École spéciale militaire de Saint-Cyr and became a parachutist.

After fifteen years in the military, he joined the prefectural body in 1974.

He then served as prefect of French Guiana from 1986 to 1988, Saône-et-Loire from 1988 to 1991, and Réunion from 1991 to 1992.

He died following a long illness at Hôpital d'instruction des armées Percy in Clamart, on 14 December 2021, at the age of 85.