ABCD

ABCD is a list of the first four letters in the English alphabet. It may also refer to:

Film

ABCD (film), a 2005 Indian Tamil-language romance film
ABCD: American Born Confused Desi (disambiguation), various Indian films so titled
ABCD: Any Body Can Dance, a 2013 Indian Hindi-language dance-drama film by Remo D'Souza
- ABCD 2, its 2015 sequel film by D'Souza

Medicine

ABC (medicine), also known as ABCD, a mnemonic for steps in resuscitation
ABCD rating, a staging system for prostate cancer
ABCD syndrome, a genetic disorder
ABCD1, a protein
ABCD² score, a score for determining the risk of stroke after a transient ischemic attack

Science

ABCD Schema, a highly structured data exchange and access model for taxon occurrence data (specimens, observations, etc. of living organisms)
ABCD matrix analysis, a type of ray tracing technique used in the design of some optical systems
ABCD-parameters, a type of properties describing the electrical behavior of linear electrical networks

Other uses

ABCd, American streaming service
Action for Boston Community Development, a Boston, Massachusetts-based non-profit social services agency
Asset-based community development, a methodology that seeks to uncover and highlight the strengths within communities
Association of Better Computer Dealers, former name of CompTIA, an American non-profit trade association
ABCD Region, an industrial district outside of São Paulo, Brazil
American-Born Confused Desi, informal term for South Asian Americans born or raised in the United States
ABCD: add, browse, change, delete, another representation of create, read, update and delete
ABCD line, a Japanese term for embargoes placed against Japan by the Americans, British, Chinese and Dutch, as well as other countries
ABCD ships, the first four steel ships built during the "New Navy" period of U.S. Naval history - USS Atlanta, Boston, Chicago and Dolphin
Four major agriculture commodity companies

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