Science and technology

• Maedi-visna virus or visna virus, a virus causing encephalitis and pneumonitis in sheep and goats
• Materialized view, a concept in database management systems
• MV, megavolt, 1,000,000 volts, a measure of electrical potential
• Mv, former chemical symbol for Mendelevium (now Md)
• MV lamp, mercury-vapor lamp
• mV, millivolt: 1/1,000 of a volt, a measure of electrical potential
• mv, abbreviation for momentum in physics, from its definition of mass × velocity: $p=mv$
• Minute volume, in medicine, the volume of air that can be inhaled or exhaled in one minute
• mv, a unix command

Places

• Martha's Vineyard, an island off the eastern coast of USA
• Maida Vale a district in London
• Maida Vale, Western Australia, a suburb in Perth, Western Australia
• MV, the ISO 3166-1 alpha-2 country code for the Republic of Maldives
• .mv, top level domain country code for the Republic of Maldives
• Mecklenburg-Vorpommern, a German state
• Mission Viejo, California, USA
• Moreno Valley, California, USA
• Mountain View, California, USA

People

• Michael Vick, American football player

Culture

• MV, Maroon 5, an American pop-rock band ('V' as the roman numeral for five)
• Miami Vice, a 1980s TV series
• "MV", "Moist Vagina", a song by grunge band Nirvana
• Music video

Transport

• MV, the IATA code for Armenian International Airways
• Merchant vessel, a ship used for transporting passengers or cargo
• Midland Valley Railroad, reporting mark of the Association of American Railroads
• Motor Vessel, a motorised ship, used as a prefix for ship names
• MV Agusta, Meccanica Verghera, an Italian motorcycle company and/or manufacturer

Sport

• Melbourne Victory FC, an Australian football (soccer) club

Other uses

• Millennium Volunteers, a former UK government initiative