Lambert Ferri (fl.
c. 1250–1300) was a trouvère and cleric at the Benedictine monastery at Saint-Léonard, Pas-de-Calais.
By 1268 he was a canon and a deacon of the monastery; he is last associated with the monastery in 1282.
He was a popular partner for jeux partis, of which some twenty-seven survive between him and other composers, including Jehan Bretel, Jehan le Cuvelier d'Arras, Jehan de Grieviler, Jehan de Marli, Phelipot Verdiere, Robert Casnois, and Robert de La Pierre.
[1] Eleven of his songs have surviving melodies, including seven of the jeux partis, three chansons, and one Marian serventois.