Montignac may refer to: Surname Michel Montignac (1944–2010), French dietician, best known for his Montignac diet Places in France Montignac, Gironde, in the Gironde department Montignac, Hautes-Pyrénées, in the Hautes-Pyrénées department Montignac-Charente, in the Charente department Montignac-de-Lauzun, in the Lot-et-Garonne department Montignac-Lascaux, in the Dordogne department Montignac-le-Coq, in the Charente department Montignac-Toupinerie, in the Lot-et-Garonne department See also Montignac diet, a weight-loss diet created by Michel Montignac