Conon II (Cono) (d. 1189 or after), Count of Montaigu and Count of Duras, son of son of Godefroi, Count of Montaigu, and his wife Julienne, daughter of Otto II, Count of Duras.
The precise dates of Conon’s rule are unclear. In a charter dated 1175 donating property to the Knights Hospitaller, Conon's brother Gilles is referred to as former count and his brothers Pierre and Conon as Counts of Montaigu and Duras, respectively. That same charter refers to their uncle Bruno the archdeacon, presumably their great-uncle Bruno, brother to Otto II, Count of Duras. A later charter dated 1182 witnessed by Henri of Esch (a relative of Goffrey of Esch, compatriot of Conon I, Count of Montaigu), identifies Conon as Count of Montaigu and Duras.
Conon was not known to be married and left no heirs. After Conon’s death, his brother-in-law Wery II de Walcourt became Count of Montaigu and Clermont, whereas Gérard II, Count of Looz, became the Count of Duras, reflecting the relationship between Looz and Duras dating back to the first Count of Looz, Giselbert.