Slieve Snaght is a mountain in the middle of the Inishowen peninsula of County Donegal, Ireland. It rises to a height of 615 metres (2,018 ft), making it the highest mountain in Inishowen and is one of the northernmost mountains of Ireland. It should not be confused with the mountain of the same name in the nearby Derryveagh range. It is an Irish Hewitt and has a trig pointed summit.