Hermann Freiherr von Spaun (9 May 1833 – 28 May 1919) was an admiral in the Austro-Hungarian Navy.

He was the Commander-in-Chief of the Austro-Hungarian Navy from December 1897 to October 1904.

Born into the Swabian noble family of Spaun, Hermann was the son of Joseph von Spaun (1788-1865), a close friend to Franz Schubert and an advisor in the imperial court who was elevated to baronial rank in 1859, and Franziska Roner Edle von Ehrenwert (1795-1890).

He married Emma Lobmeyr on 28 April 1893 in Trieste.

The cruiser SMS Admiral Spaun was named in his honour.