What does LYO stand for?

Lost Island Yachts Inc., Ruthven, IA - Manufacturer code for watercraft hull identification number (USCG)

Lubavitch Youth Organization (EA)

Lyondell Chemical - Formerly, Lyondell Petrochem - NYSE symbol

Lyondell Petrochem - NYSE symbol

Lyondell Petrochemical - NYSE symbol (SPSG)

Lyons, KS - Location identifier - FAA (FAAL)

Lyophilized - Medicine (DMAA)