Haldur Grüner

Haldur Ragnvald Grüner (born 17 October 1818 in Kristiansand, Norway, died 8 December 1858) was the founder of Grüners Handelsakademi, a business school in Copenhagen.

His father was a Norwegian lieutenant colonel, but the family moved to Copenhagen when Haldur was young. Here he founded Grüners Handelsakademi in 1843, and remained its leader until his death. He was then succeeded by Albert Kaarup. Grüner published numerous practical manuals, tables, and similar works for merchants. His greatest work was the 8-volume business encyclopedia, Encyklopædi for Handlende, completed by others after his death.

In 1845 he married Jacobine Alette Steen Hoffmann Dewold from Trondheim.