Halitgar (Halitgarius, Halitcharius, Halitgaire, Aligerio) was a ninth-century bishop of Cambrai (in office 817–831).
In 822 he travelled to Denmark as a missionary with Ebbo of Rheims and Willeric of Bremen, though not to great immediate effect.
[2] In 825, with Amalarius of Metz, he carried the conclusions of a Paris synod on iconoclasm to Louis the Pious.
[10] Ebbo's intention was to have a normative penitential; Halitgar set aside tariffs of penances for exhortations.
[11][12] This work and the two attributed to Hrabanus Maurus were considered to supersede those written before, and were very influential, particularly in pre-Norman England.