Jens Friedenreich Hage (6 October 1752 - 17 June 1831) was a Danish merchant and landowner.

The Hage family was of Dutch origins and had counted merchants at least since the 17th century.

In 1777 he moved to the Danish West Indies where he made a fortune as a merchant and plantation owner.

As of 28 July 1815, Hage married twice, first to Gertrud Heitmann (29 December 1766 - 1 March 1801) and then to Marie Sophie Ruspini (c. 1783 - 16 January 1864).

His first wife bore him 11 children, eight daughters and three sons: he was also active as a brewer in Copenhagen.