ABCD

ABCD may refer to:

Film

 * ABCD (film), a 2005 Indian Tamil-language romance
 * ABCD: American Born Confused Desi (disambiguation)
 * ABCD: Any Body Can Dance, a 2013 Indian Hindi-language dance-drama
 * ABCD 2, the 2015 sequel

Music

 * ABCD (song), a 2024 South Korean song by Nayeon of Twice

Medicine

 * ABCD, a variation of ABC (medicine), a medical mnemonic
 * ABCD guideline, used in diagnosis of melanoma
 * ABCD rating, a staging system for prostate cancer
 * ABCD syndrome, a genetic disorder

Other uses in science and technology

 * ABCD Schema, a data exchange and access model in biology
 * ABCD matrix analysis, or ray transfer matrix analysis
 * ABCD-parameters, in a two-port network
 * ABCd, an American TV streaming service
 * ABCD (add, browse, change, delete) a variation of create, read, update and delete in computer programming

Other uses

 * ABCD line, embargoes placed against the Japanese Empire by the Americans, British, Chinese and Dutch
 * ABCD Region, an industrial district outside of São Paulo, Brazil
 * ABCD ships (Atlanta, Boston, Chicago and Dolphin) of Delaware River Iron Ship Building and Engine Works
 * Action for Boston Community Development, an American organization
 * American-born confused desi, informal term for South Asian Americans
 * Asset-based community development, a methodology for the sustainable development of communities
 * Association of Better Computer Dealers, now CompTIA
 * "ABCD" companies that dominate world agricultural commodity trading: Archer-Daniels-Midland, Bunge, Cargill, Louis Dreyfus