Bárid mac Oitir (Old Norse: Bárðr Óttarsson, died 914) was a Viking^{[nb 1]} leader who may have ruled the Isle of Man in the early 10th century.

Bárid mac Oitir is mentioned once in contemporary Irish annals. The Annals of Ulster in 914 record:

A naval battle off the Isle of Man between Bárid son of Oitir and Ragnall grandson of Ímar, in which Bárid and nearly all of his army were destroyed.^[2]

This incident is the earliest known occasion where Vikings are linked with Man.

• "The Annals of Ulster". Corpus of Electronic Texts (15 August 2012 ed.). University College Cork. 2012. Retrieved 23 November 2014.

• Downham, Clare (2007). Viking Kings of Britain and Ireland: The Dynasty of Ívarr to A.D. 1014. Edinburgh: Dunedin Academic Press. ISBN 978-1-903765-89-0.

• CELT: Corpus of Electronic Texts at University College Cork. The Corpus of Electronic Texts includes the Annals of Ulster and the Four Masters, the Chronicon Scotorum and the Book of Leinster as well as Genealogies, and various Saints' Lives. Most are translated into English, or translations are in progress.