Óttarr svarti^[a] (“Óttarr the Black”) was an 11th-century Icelandic skald. He was the court poet first of Óláfr skautkonungr of Sweden, then of Óláfr Haraldsson of Norway, the Swedish king Anund Jacob and finally of Cnut the Great of Denmark and England. His poems are significant contemporary evidence for the careers of Óláfr Haraldsson and Cnut the Great.

Óttarr was the nephew of Sigvatr Þórðarson, and Óttarr clearly based the poem Hǫfuðlausn, his encomium for Óláfr Haraldsson, on Sigvatr’s Víkingarvísur, which tallies the king's early Viking expeditions.^[1] A small þáttr (short story) on Óttarr, Óttars þáttr svarta, is preserved in Flateyjarbók, Bergsbók, Bæjarbók and Tómasskinna.

1. Óláfsdrápa sœnska. Verses for the Swedish king Olof Skötkonung.
2. Höfuðlausn (also spelled as Hǫfuðlausn).
3. Knútsdrápa. Verses for Cnut the Great. Knútsdrápur composed by other poets include those of Sigvatr Þórðarson and Hallvarðr háreksblesi.
4. Lausavísur.

A recent review of the origins of the nursery rhyme London Bridge is Falling Down has debunked the popularly held belief that it enshrines an English folk memory of a Viking attack on London, sometimes connected with an attack in 1014 for which a stanza from Óttarr's Höfuðlausn is the earliest source.^[2]

• Skaldic Poetry of the Scandinavian Middle Ages
• Óttarr svarti All extant poetry
• Óttars þáttur svarta (eftir Flateyjarbók)
• Jesch, Judith (2005) 'Skaldic poetry, a case of literacy avant la lettre?' In: Literacy in Medieval and Early Modern Scandinavian Culture. Ed. P. Hermann. Odense. Pp. 187–210
• Jesch, Judith (2006). 'The ‘meaning of the narrative moment’: Poets and history in the late Viking Age'. In: Narrative and History in the Early Medieval West. Ed. E. M. Tyler, R. Balzaretti. Turnhout. Pp. 251–65
• Thunberg, Carl L. (2012). Att tolka Svitjod [To interpret Svitjod]. Göteborgs universitet. CLTS. pp 35-36. ISBN 978-91-981859-4-2.