Act or ACT may refer to: Arts and entertainment A.C.T, a Swedish band Act (band), a British band Act (drama), a segment of a play or opera ACT Music, a German music label ACT Theatre, in Seattle, Washington, US Acting, theatrical performance Acts, a 2012 album by American band RNDM American Conservatory Theater, in San Francisco, California, US Business organizations AdaCore, formerly Ada Core Technologies, Ada specialist software company Advanced Cell Technology, stem cell company Advanced Computer Techniques, a U.S. software company 1962–1994 Applied Computer Techniques, later Apricot Computers, UK Atria Convergence Technologies, a telecommunications company in India Aviation Composite Technology, an aircraft manufacturer in the Philippines Education ACT (nonprofit organization), provides assessments etc. for US school students etc. ACT (test), for college admission, US Asian College of Technology, Cebu City, Philippines Australian College of Theology Government / military AC Transit, a transit agency serving Alameda and Contra Costa Counties, California Advanced Clean Trucks Regulation, a rule made by the California Air Resources Board which requires trucks to decarbonize Advanced Concepts Team, a research team of the European Space Agency Agency for Community Transit, a paratransit system for Madison County Transit, Illinois Allied Command Transformation, a NATO strategic command Azienda comunale del traffico, a former transport operator in Lugano, Switzerland Political parties and campaigning/advocacy groups ACT Alberta, a Canadian coalition to raise awareness about human trafficking ACT Alliance, an alliance of churches for coordinating humanitarian assistance and development work ACT New Zealand, a political party in New Zealand ACT-CIS Partylist, a political party in the Philippines ACT Teachers Partylist, a political party in the Philippines ACT! for America, an advocacy group in the United States Action for Children's Television, an organization dedicated to improvements in children's television Agir (France) (French for Act), a political party in France Alliance for Change and Transparency, a political party in Tanzania Amazon Conservation Team, a non-profit organization that works to protect the Amazon rainforest America Coming Together, a US political group Professional organizations Academy of Clinical Thyroidologists, United States Alliance of Concerned Teachers, Philippines American College of Toxicology Association for Citizenship Teaching, UK Association for Competitive Technology, international association of software developers Association of Cinematograph, Television and Allied Technicians, UK Association of Corporate Treasurers, UK Sports Australia national cricket team American Canadian Tour, a stock car racing series Other organizations ACT (now Together for Short Lives), a children's charity in the United Kingdom Addenbrooke's