Yn is a letter of the old Romanian Cyrillic alphabet.
YN or Yn may also refer to:
- Yeoman (United States Navy), a rank
- A US Navy hull classification symbol: Yard net tender (YN)
- Yoctonewton, a unit of force equal to 10 newtons
- Yottanewton, a unit of force equal to 10 newtons
- Triple bond, in a chemical compound
- 2C-YN, an analogue of the phenethylamine derived hallucinogen 2C-E
- Yes–no question
- Yunnan, a province of China (Guobiao abbreviation YN)
- Y/N, a 2023 novel by Esther Yi
- Yttrium nitride
This disambiguation page lists articles associated with the title Yn.If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: