Archduke Leopold Ludwig Maria Franz Julius Estorgius Gerhard of Austria (6 June 1823 – 24 May 1898) was an Austrian general and admiral.

Leopold followed his father in a military career, attaining the rank of Feldmarschall-leutnant (lieutenant general) in the Austrian Army.

The two cousins had never been on friendly terms, and Maximilian viewed Leopold as one of the archdukes who would benefit from the renunciation of his hereditary rights in Austria.

Maximilian delayed signing the 'Family Compact', as it was called, until the visit of Franz Josef to Miramar on 9 April 1864.

[1] Undoubtedly to Maximilian's chagrin and irritation, Leopold was promoted to the rank of Viceadmiral in the Austro-Hungarian Navy and acted as Inspector General of the Marines and the fleet from 1865 up till 25 February 1868.