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Look up Kayin in Wiktionary, the free dictionary.
Kayin can refer to:
- Kayin State, an administrative division of Myanmar (Burma)
- Kayin or Karen people, a minority ethnic group in Myanmar
- Kayin, Iran, a village in Kerman Province, Iran
- alternative spelling for Cain
- Kayin Amoh, a character in the Battle Arena Toshinden fighting game series
- Kayin, alias of the creator of the indie video game I Wanna Be The Guy