Abstract. Duvigneaud, J. & Saintenoy-Simon, J.- Distribution of Gymnadenia odoratissima in Belgium and in the department of the Ardennes (France) [Natural. belges (Orchid. 3) 70 (1989): 96-98]. Two distribution maps of Gymnadenia odoratissima have been drawn. The first one was drawn according to the I.F.B.L. method: it covers Belgium and the department of the Ardennes. THe other one covers the area of the furure natural park of Viroin-Hermeton.