Caittil Find (fl. 857) was the leader of a contingent of Norse-Gaels, recorded as being defeated in battle in 857 CE. Some historians have considered him to be identical to Ketill Flatnose, a prominent Norse sea-king who had strong associations with the Hebrides of Scotland and Olaf the White. This view is however not shared by all.
The name Caittil may be a Gaelicisation of the Old NorseKetill. According to Alex Woolf, Ketill was a popular name at this period and it is not clear whether the GaelicCaittil even represents this Norse name. Caittil's byname means "white" (or "fair") not "flat-nosed". Also, the Icelandic sources which document Ketill do not hint at his being active in Ireland. Ketill was the father-in-law of Olaf the White, yet Caittil is recorded as battling Amlaíb. Other historians propose that Caittil may have been active in Wales prior to his coming to Ireland.