| Unit Name: | Jasta 89 |
| Dates: | 1918 |
| Country: | Kingdom of Prussia, German Empire |
| Branch: | Luftstreitkräfte |
| Type: | Fighter squadron |
| Battles: | World War I |
Royal Prussian Jagdstaffel 89, commonly abbreviated to Jasta 89, was a "hunting group" (i.e., fighter squadron) of the Luftstreitkräfte, the air arm of the Imperial German Army during World War I.
Jasta 89 was founded on 28 or 29 October 1918. Its predecessor was Kampfeinsitzerstaffel ("Scout Detachment") 9. The new squadron never became operational.