Jakob Langebek (23 January 1710 - 16 August 1775) was a Danish historian, linguist, lexicographer, and archivist.

[2] He studied Danish history, and it was by critical articles on contemporary writers in this field that he attracted attention.

His works consist of valuable contributions on his favorite subject to the journals, and to the Danske Magazin, which he edited and nearly all of which he wrote himself.

His most important work was a collection of Danish historical documents from the Middle Ages, titled Scriptores Rerum Danicarum Medii Œvi (1772–1774).

He was unable to finish its publication,[2] and the work was completed by Peter Frederik Suhm and others from original papers (1778).