CYM or Cym may refer to:
Organisations Choctaw Youth Movement, a Choctaw nationalist party and grassroots movement in Oklahoma Connolly Youth Movement, an Irish Marxist–Leninist youth group Centre for Young Musicians, London Spilka Ukraïns'koï Molodi (Спілка української молоді), the Ukrainian Youth Association CYM RFC, a Rugby Club in Dublin, Ireland
Standardised codes Cayman Islands, by ISO 3166-1 country code Welsh language or Cymraeg, by ISO 639 language code .cym, an unused top-level Internet domain Chatham Seaplane Base, United States, by IATA airport code
Other uses Cym, the Cymbidium orchid genus CYM, the CMYK color model, in printing