Gomelo II (died 906x9) was the Bishop of Oviedo during the final years of the reign of Alfonso III of Asturias.
Only one document from his episcopate survives, though it was interfered with at a later date by Pelagius of Oviedo.
Dated 20 January 905, it is charter of the Cathedral of San Salvador signed by a bishop Gomellus along with the bishops Froilán of León, Sisenand of Iria, Nausto of Coimbra, and Reccared of Lugo.
The cathedral also received as gifts books, ornaments, villages, monasteries, churches, and rents of all kinds, but the jurisdiction over the church of Santa María de Lugo and the towns of Avilés and Gijón also given appear to be later (forged) additions.
A document dated 20 January 905 in Pelagius's Liber testamentorum records a large donation made by the monarch to the see of Oviedo and confirmed by Gomelo II.