Jo

Jo, jo, JO, or J.O. may refer to:

• Jordan (ISO country code: JO)
• .jo, the internet country code top-level domain (ccTLD) for the country of Jordan
• JALways (IATA code: JO), airline subsidiary of Japan Airlines
• Journal Officiel de la République Française, the official gazette of the Government of France
• jō, a roughly 4-foot-long wooden staff used in some Japanese martial arts
• Jo (film), a 1971 French comedy
• The U.S. Navy rating abbreviation for "journalist"