Carl Hjalmar Borgstrøm (1909 – 1986) was a Norwegian professor of Indo-European linguistics who made significant contributions to the scientific study of Scottish Gaelic and Irish.
His key publications on Scottish Gaelic include:
- (1937) The dialect of Barra in the Outer Hebrides Norsk Tidsskrift for Sprogvidenskap 8
- (1940) A linguistic survey of the Gaelic dialects of Scotland. The dialects of the Outer Hebrides Oslo University Press
- (1941) A linguistic survey of the Gaelic dialects of Scotland. The dialects of Skye and Ross-shire Oslo University Press