Léon de la Fontaine

François Joseph Albert Léon de la Fontaine, (18 November 1819 – 5 February 1892), was a Luxembourgish lawyer, politician and botanist.

From 14 December 1866 until 18 June 1867 he was Director General (Minister) of Justice, and initially also of Finance in the Tornaco Ministry.

From 1867 he was a member of the Société des Sciences naturelles the later scientific section of the Institut grand-ducal, a founding member of the botanical society (Société botanique).

He married Anne Marie Jos.

He was the son of Gaspard-Théodore-Ignace de la Fontaine and the brother of Edmond de la Fontaine ("Dicks") and of Alphonse de la Fontaine.