| Franz Ritter von Keil | |
| Birth Date: | September 15, 1862 |
| Death Date: | November 22, 1945 |
| Allegiance: | Austria |
| Branch: | Navy |
| Rank: | Naval Officer |
| Commands: | Senior Naval Adviser to Emperor Charles I |
| Battles: | World War I |
Franz Ritter von Keil (September 15, 1862 – November 22, 1945)[1] was an Austrian naval officer during World War I. He served as Emperor Charles I's senior naval adviser at the close of the war. The position was a sinecure, as the Emperor did not take advice and the navy did not take to sea.[2]
Von Keil's parents were lieutenant field marshal Heinrich Ritter von Keil and Georgina Maria Brentano (1842–1867). He had one daughter, Herta von Keil Cima (1891–1971).[3]