Æthelfrith (died c. 616) was King of Bernicia from c. 593 until c. 616; he was also, beginning c. 604, the first Bernician king to also rule Deira, to the south of Bernicia.
Этельфрит (; погиб в ) — король Дейры в 593/604 — 616, король Берниции в 593 — 616 и король Нортумбрии в 593/604 — 616 годах.