Alduin I, Frankish nobleman
Alduin (or Hildouin) I (died 27 March 916) was the Count of Angoulême from 886.

He was the son of Wulgrin I, Count of Angoulême, whom he succeeded on 3 May 886. Like his father, he was charged with defending parts of Aquitaine against the Viking invaders.

Alduin's wife is unknown, but with her he had a son:

William II of Angoulême, a.k.a., William Taillefer I (926–945), Count of Angoulême.