Delphi (Irish: Fionnloch, meaning "white/fair lake") is a locality in County Mayo, Ireland. Its English name was coined by the Marquis of Sligo, who built a famous hunting lodge there. It is located on the Owengarr River that connects Fin Lough to Doo Lough, between the fjord of Killary Harbour to the south and the Sheeffry Hills to the north, in a valley surrounded by the Mweelrea Mountains and the neighbouring peaks of Ben Creggan and Ben Gorm in a very beautiful part of the westerly Irish region of southwest Mayo near the Galway border. The R335 road passes through it.