JD, J.D. or jd may refer to:

• JD (film), a 2016 Bollywood film
• J.D. (Scrubs), nickname of Dr. John Dorian, fictional protagonist of the comedy-drama Scrubs
• JD Fenix, a character from the Gears of War video game series
• John Durairaj or JD, titular character of the 2021 Indian film Master, played by Vijay
• J. D.'s Revenge, 1976 motion picture
• Jade Dynasty (video game), a 2007 fantasy MMORPG
• Just Dance (video game series), video game series
• "J.D.", an episode of the sixth season of Fear the Walking Dead

• JD.com, a Chinese electronic commerce company
• Jack Daniel's, a whiskey brand, distilled in Tennessee, US
• Janata Dal, a political party in India
• John Deere, an agricultural machinery manufacturer
• JD Edwards, a former computer software company
• J.D. Power, a data analytics, software and consumer intelligence company
• JD Sports, a UK retail company
• J D Wetherspoon, a UK pub and restaurant chain
• Justdial, an Indian local search agency
• Dawson State Jail, operated by the Corrections Corporation of America and owned by the Texas Department of Criminal Justice
• Justice Democrats, an American political action committee
• Jnana Deepa, Institute of Philosophy and Theology, Pontifical Athenaeum, Pune, India
• Beijing Capital Airlines (IATA code JD), a Chinese airline

• J Dilla (1974–2006), also known as Jay Dee, a late hip-hop producer
• Jaedong (born 1990), South Korean professional StarCraft player
• Jaydee (born 1958), stage name for Robin Albers, a Dutch house music producer and DJ
• Jadeveon Clowney (born 1993), American football player
• Jermaine Dupri (born 1972), rapper/music producer also known as JD
• John Doe/Jane Doe, a placeholder name for a party whose true identity is unknown or must be withheld
• Jonathan Davis (born 1971), American musician/singer from the nu metal band Korn
• Jonathon Douglass (born 1981), Australian Christian musician/singer at the Hillsong Church in Sydney, Australia
• J. D. Drew (born 1975), American baseball player
• J. D. Hammer (born 1994), American Major League Baseball pitcher for the Philadelphia Phillies
• J. D. Beresford (1873–1947), English writer
• JD Bertrand (born 2000), American football player
• J. D. Dillard (born 1987), American director, screenwriter, and producer
• Jason David Frank (1973–2022), actor and mixed martial artist who played the Green and White Power Ranger
• J. D.–Jerry, Indian filmmaking duo
• J. D. Jones (born 1936), American firearms and cartridge designer, firearms writer, and president of SSK Industries
• JD McDonagh (born 1990), Irish professional wrestler and member of The Judgment Day.
• J. D. McDuffie (1938–1991), American racing driver
• J. D. Power III (1931–2021), American businessman
• J. D. Roth (born 1968), television personality
• J. D. Salinger (1919–2010), American author
• JD Souther (1945–2024), American singer, songwriter, and actor
• J. D. Tippit (1924–1963), American police officer
• JD Vance (born 1984), United States senator from Ohio and current American vice-president elect

• Juris Doctor (J.D.), a degree in law
• Jamesville-DeWitt Central School District, New York
• Jason "J. D." Dean, a character and the main love interest in Heathers
• Java Decompiler, computer programmer's tool to decompile Java class files
• Jersey Devil, a cryptozoological animal
• Job description, an abbreviation for a person's nature of job or terms of reference (TOR)
• Jordanian dinar, the currency of Jordan (unofficially abbreviated "JD")
• Journal of Discourses, a historical periodical of The Church of Jesus Christ of Latter-day Saints
• Julian day, the Julian day number (JDN) plus the decimal fraction of the day
• Jury duty
• Juvenile delinquency