Malawi (ISO 3166-1 country code)

Morrowind

NFSMW, a popular abbreviation for Need for Speed: Most Wanted

Miss World, an international beauty pageant

Molecular weight, a former term for molecular mass

Microwave, a type electromagnetic wave

MediaWiki, wiki software

Mediumwave, a radio band

Moment magnitude scale

Merriam-Webster, United States company

Master of Wine

Maya Island Air IATA airline designator

Museums and the Web, an international conference series

Maintenance of way, railroad upkeep

Men's Wearhouse, men's dress apparel retailer

Weight average molecular weight

Megawatt, a unit of power

The Midwest region of the United States