Gilbert Peche, 1st Baron Pecche and Lord of Brunne, was a 13th—14th century English noble.

He served in the Gascon campaign of King Edward I of England and was summoned to parliament as a Baron from 29 December 1299 to 3 November 1306 and again on 14 March 1322.

[1] He signed the Barons' Letter of 1301 to and Pope Boniface VIII served as the Seneschal of Gascony from 1316 until 1317.

Peche married Iseult, by whom he had the following known issue: His granddaughter, Katherine Pecche, daughter of his son Gilbert Pecche and Joan Watevile, is a direct ancestor of Oliver Cromwell.

His paternal grandfather's mother, Alice FitzWalter, is the daughter of the Lord Walter Fitz Robert, who through him is the descendant of Richard I of Normandy.