What does BYM stand for?

Bayamo - Cuba - Airport symbol (OAG)

Bay Shore Marine Basin, Bay Shore, NY - Manufacturer code for watercraft hull identification number (USCG)

Bidyara - Language code (ETLW)

Bornu Youth Movement (SAUO)

Bright Young Man - Central Intelligence Agency term (CARL)

Historic Yale Museum, British Columbia - Library symbol - National Library of Canada (NLC)