IMO

The three-letter abbreviation IMO may have several meanings, depending on context:

• In My Opinion (USENET and internet chat slang; see also IMHO)
• International Maritime Organization
• International Mathematical Olympiad
• International Meteor Organization
• International Money Order
• Irish Medical Organisation (a labor union)

"Imo" (only first letter in capitals) may also refer to:

• Imo State, Nigeria