Yar may refer to:
Rivers
- Western Yar, Isle of Wight, England
- Eastern Yar, Isle of Wight, England
- River Yare, in East Anglia, England
In Russia:
- Yar, Russia, name of several inhabited localities in Russia
- Yar (restaurant), Moscow
In fiction:
- Tasha Yar, a fictional character on Star Trek: The Next Generation
- The hero in the video game Yars' Revenge
Other uses:
- Yar (gene), a long non-coding RNA gene found in Drosophila