Mass is the quantity of matter in a physical body and a measure of the body's inertia.
Mass or MASS may also refer to:
Arts, entertainment, and media Music Mass (band), an English post-punk band Mass (music), a choral composition that sets liturgical text to music Mass (Stravinsky), a composition by Igor Stravinsky Mass (Bernstein), a musical theater work by Leonard Bernstein Mass (Grotus album), 1996 Mass (The Gazette album), 2021 The Mass (album), by musical project Era Mass, a 2011 album by New Zealand musician Alastair Galbraith
Other uses in arts, entertainment, and media Mass (2004 film), Indian Telugu-language film Mass (2021 film), American drama film Mass (novel), a 1973 novel by Filipino author F. Sionil José The Masses, a socialist magazine published in the US from 1911 to 1917
Military MASS (decoy system), a naval defence system M26 Modular Accessory Shotgun System (or MASS), a developmental shotgun for the M16 rifle/M4 carbine family of guns MASS, Marine Air Support Squadrons within the United States Marine Corps
People with the name Mass (surname) Peter Harris (producer), an electronic musician who uses the alias Mass Mass Sarr, Jr. (born 1973), a Liberian former footballer
Places Mass City, Michigan, also known as Mass, an unincorporated community in the United States Maß (Lauer) (pronounced "mass"), a river of Bavaria, Germany, left tributary of the Lauer Massachusetts (abbreviated Mass or MA), a U.S. state in New England Massachusetts Bay (abbreviated Mass Bay), a bay off the U.S. state of the same name
Religion Mass (liturgy), an act of worship in some Christian churches Mass in the Catholic Church, the main act of worship of the Catholic Church
Society Mass Party, a political party in Thailand (2006–2009?) Mass society, a society based on relations between huge numbers of people, whose prototypical denizen is the "mass man" Mass politics, politics in the mass society, featuring especially the modern political party
Other uses BrightBus, a former British vehicle body manufacturer and school bus operator that previously traded as MASS Engineering Manab Adhikar Sangram Samiti, a human rights NGO in Assam (India) Marc and Eva Stern Math and Science School (Stern MASS) Maritime Autonomous Surface Ship, An autonomous cargo ship Maß (pronounced "mass"), a German word describing the amount of beer in a regulation mug, also used for the mug itself Mass (mass spectrometry), a chemical analysis technique Mass (object), a high-density object Mawson Analytical Spectrometry Services, services offered at the University of Adelaide, Australia Tumor, or mass, a neoplasm that is enlarged
See also Landmass or land mass, a continuous area of land Massive (disambiguation) Weight (disambiguation)