Henry del Vlasto
- Born: Abt 1085
- Marriage: Flandina
- Died: Bef 1141
Henry del Vasto was a son of Boniface, margrave of Western Liguria, and brother of Adelaide, countess of Sicily (1089\endash 1117) and Jerusalem (1112\endash 1117).
He received Paternò and Butera in Sicily from either Roger I or Adelaide during her regency after 1101. He also married Flandina, a daughter of Roger and his second wife, Eremburga of Mortain. His nephew, Roger II, named one of his sons Henry after the child's great uncle.
According to Alexander of Telese, it was Henry's idea that Roger, who then ruled all of Southern Italy and Sicily, should have the title of king and rule in Palermo, where, he alleged, kings had ruled in the past. Roger was duly crowned in 1130.
Henry married Flandina, daughter of Count Roger I 'Bosso' of Sicily and Eremburga of Mortain. (Flandina was born about 1088.)