| Unit Name: | Jasta 85 |
| Dates: | 1918 |
| Country: | Kingdom of Prussia, German Empire |
| Branch: | Luftstreitkräfte |
| Type: | Fighter squadron |
| Battles: | World War I |
Royal Prussian Jagdstaffel 85, commonly abbreviated to Jasta 85, was a "hunting group" (i.e., fighter squadron) of the Luftstreitkräfte, the air arm of the Imperial German Army during World War I.
Jasta 85 was founded on 28 or 29 October 1918. Its predecessor was Kampfeinsitzerstaffel ("Scout Detachment") Kest 5. The new squadron never became operational.