Franz Xaver Danhuber (often wrongly spelled Xavier and Dannhuber; 27 January 1891 – 4 October 1960) was a German World War I flying ace credited with eleven aerial victories.

He shot down an observation balloon near Vlamertinghe on 12 August 1917 to start his victory string.

[4][5] On 1 October 1917, he had another victory in which he killed ace Robert Slolely and eight days later he shot down William Rooper.

On the 18 October Danhuber took a bullet through his upper arm while being shot down, probably by Andre de Meulemeester, which removed Danhuber from action until 7 November on which date he returned to action in a different squadron, Jasta 79.

Five days later, exactly one year since his last victory, he scored his final triumph by shutting down a new British Sopwith Dolphin.