Malaysia Airlines (ICAO: MAS), the international airline of Malaysia

Micro-Architecture Specification, term used in computer engineering, typically a certain type of documentation for microprocessor design, see Computer architecture

Mozilla Application Suite, a combination web browser, email client, and newsgroup reader

Marker Assisted Selection, a genome-tagging technique

Monetary Authority of Singapore, Singapore's central bank

Microsoft AntiSpyware, an anti-spyware program released by Microsoft in 2005

Mas Systems, a manufacturer of arcade game equipment

Multi-agent system, a system built around multiple autonomous entities which interact

Milliarcsecond (mas), a unit of angular measurement

Lord in Javanese

Masio, a town in Alessandria Province, Piedmont, Italy

Motu Audio System, now known as Digital Performer, audio sequencer software published by Mark of the Unicorn

Más y Menos

Muslim American Society, an Islamic revival and reform movement

MAS (boat), Italian Motor Torpedo Boats of the 20th century

Mas (Provencal Farmhouse) a traditional farmhouse in Provence, France

Mutual Admiration Society (group), a musical collaboration between of Glen Phillips and Nickel Creek

Artur Mas (born 1956), Catalan politician

Magic angle spinning, a technique used in solid state nuclear magnetic resonance spectroscopy

Movement toward Socialism (Bolivia) (Movimiento al Socialismo), a Bolivian political party

Movement toward Socialism (Venezuela) (Movimiento al Socialismo), a Venezuelan political party

Nicolas Mas (born 1980), French rugby union footballer

Mandibular advancement splint, a device used to treat sleep apnea

Muerte a Secuestradores (Death to Kidnappers), a Colombian paramilitary group

Mouvement pour une Alternative Socialiste (Movement for a Socialist Alternative), a Belgian Trotskyist organization

MAS 90, the first in a series of accounting software sold by Sage Software

Milliampere-second (mAs), a fraction of an ampere-hour, a unit of electric charge

Media Application Server, a Multimedia_framework

Master of Applied Science, a professional degree

"Más," a song by Kinky from their 2002 album Kinky

Mongolian Academy of Sciences, a Mongolian college

Malaysia, or its Football Association of Malaysia, in FIFA official reports.

Más (album), an album by Spanish-singer Alejandro Sanz