Altnaharra (Scottish Gaelic: Allt na h-Eirbhe)[1] is a small hamlet in Sutherland in the Highland region of northern Scotland.

The name Altnaharra is derived from the Scottish Gaelic Allt na h-Eirbhe, meaning Stream at the boundary wall.

The area north of the hamlet has been designated a site of special scientific interest for its internationally important range of wetland vegetation.

The village's northerly latitude and inland location mean that in winter it often features in the daily weather extremes for the United Kingdom.

In a Parliamentary debate on the Spring Statement on 23 March 2022, local MP Jamie Stone said, "The village of Altnaharra in my constituency is the coldest place in the UK every single winter.

[15] Altnaharra has an oceanic climate (Cfb) with short, mild summers and long, cool winters.