2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/60047Let G be a non-connected reductive real Lie group. In this paper, I parametrize the set of irreductible tempered characters of G. Afterwards, I describe these characters by means of some ``Kirillov's formulas'', using the descent method near each elliptic element in G. If G is linear and connected, the parameters that I use are ``final basic'' parameters in the sense of Knapp and Zuckerman.54 pages, Latex, in FrenchRepresentation Theory22E46; 22E45; 53D50text