Bengt Ivar Hesselman (1875–1952) was a Swedish linguist and philologist, specialising in Scandinavian languages.

[4] He passed his maturity examination (mogenhetsexamen) in Stockholm in 1893 and became a student at Uppsala University in the same year.

In 1902 he defended his doctoral thesis on some phonological features of East Swedish dialects (Östsvenska mål, spoken in parts of Finland and historically in parts of Estonia).

[3] His scholarly production includes works on phonological history, the emergence of Standard Swedish, and a large work on Scandinavian language history where the first part, Omljud och brytning i de nordiska språken was published in 1945, and later parts in 1948, 1952 and posthumously in 1953.

[1] Hesselman married Märta Charlotta von Post in 1906.