Ademar Jordan (fl. 1198 - 1212) was a knight and troubadour from Saint-Antonin in the Rouergue. He was possibly a vassal of Raimon Jordan.
Ademar apparently participated in the war against the Albigensian Crusade, for he was captured by Simon de Montfort on 6 May 1212 and is not heard from again. On the occasion of his capture he composed a sirventes in imitation of Bertran de Born, Provençal, Old (to 1500);Occitan, Old (to 1500);: Si tot m'ai estat lonjamenz. His only other extant song is Provençal, Old (to 1500);Occitan, Old (to 1500);: Pons, viscoms, lezir e sojor, a cobla esparsa or cobla de circonstance.
Ademar may also have participated in one of the Crusades (possibly the Fourth or the Reconquista).[1]