MW or mW may refer to:
Science and technology
- MediaWiki, (MW) free and open-source wiki software
- Megawatt, (MW) a unit of power
- Milliwatt, (mW) one thousandth of a watt
- .mw, the country code top level domain (ccTLD) for Malawi
- Medium wave, (MW) frequency range of 530 to 1700 kHz (commonly called the AM band)
- Molecular weight, a former term for molecular mass
- Microwave, a type of electromagnetic wave
- Moment magnitude scale (M<sub>w</sub>), a measure of earthquake size
- Weight average molecular weight
- .mw, the file extension of a Maple (software) worksheet
Arts and entertainment
Games
- Call of Duty 4: Modern Warfare, a 2007 first person shooter
- Call of Duty: Modern Warfare, a 2019 first person shooter
- MechWarrior, a video game series first released in 1989
- Need for Speed: Most Wanted (disambiguation), two racing video games released in 2005 and 2012
Other media
- MW (manga), a manga series by Osamu Tezuka
- Miss World, an international beauty pageant
- Museums and the Web, an international conference series
- MW (film), a 2009 Japanese film
- Mythic Warriors, a cartoon series
- MW (Indian magazine), an Indian men's lifestyle magazine
Companies
- Men's Wearhouse, a men's dress apparel retailer
- Merriam-Webster, an American publisher of dictionaries etc.
- Mountain West Conference, an American collegiate sports conference
- Mokulele Airlines (IATA airline designator MW)
Places
- Malawi (ISO 3166-1 country code)
- Midwestern United States region
- Manhattan West, New York, NY, USA
Other uses
- Master of Wine, a wine expertise qualification
- Miracle Whip, a brand of mayonnaise
See also
- MWI (disambiguation)
- MW-1, a German munitions dispenser
- MWA (disambiguation)
- MUU (disambiguation)
- MUV (disambiguation)
- MVU (disambiguation)
- MVV (disambiguation)