Odo I (or Eudes I) was a West Frankish prelate who served as abbot of Corbie in the 850s and as bishop of Beauvais from around 860 until his death in 881.

[6] The date of his death is established as 25 June in an obituary calendar preserved in Beauvais Cathedral, but the exact year is disputed.

Philip Grierson and Charles Delettre both accepted the authenticity of the Tuzey canons and thus placed his death in June 861, pushing back the start of Odo's episcopate by two years.

[8] In the early 860s, when a monk of the abbey of Saint-Germer-de-Fly, which the bishop of Beauvais controlled, affirmed the heretical doctrine of Macarius the Irishman that there is only one soul that all men share, Odo contracted Ratramnus to write a tract, Liber de anima ad Odonem Bellovacenem, refuting Macarius.

[13] On 16 July 876, Odo spoke at the Synod of Ponthion in favour of recognising the primacy of Archdiocese of Sens in Gaul, a position that put him at odds with his metropolitan, Hincmar of Reims.

In it he specified the membership of the council that was to supervise the king's son, Louis, in the exercise of the royal functions while Charles was absent in Italy.