| Honorific-Prefix: | Most Reverend |
| Fernando Vellosillo Barrio | |
| Bishop of Lugo | |
| Church: | Catholic Church |
| Diocese: | Diocese of Lugo |
| Term: | 1567–1587 |
| Predecessor: | Francisco Delgado López (bishop) |
| Successor: | Juan Ruiz de Villarán |
| Death Date: | 18 February 1587 |
| Death Place: | Lugo, Spain |
Fernando Vellosillo Barrio (died 18 February 1587) was a Roman Catholic prelate who served as Bishop of Lugo (1567–1587).[1]
On 13 January 1567, Fernando Vellosillo Barrio was appointed during the papacy of Pope Pius V as Bishop of Lugo. He served as Bishop of Lugo until his death on 18 February 1587. While bishop, he was the principal co-consecrator of Juan de Sanclemente Torquemada, Bishop of Orense (1579).