LJ may refer to: Arts and media L. J. Burrows, a fictional character on the TV series Prison Break Lemon Jelly, a British electronica duo Library Journal, an American trade publication for librarians Linux Journal, an American monthly technology magazine LiveJournal, a Russian social networking service Businesses and organizations LJ Air, a Chinese airline Jin Air, a South Korean airline (IATA code LJ) Lashkar i Jhangvi, a Muslim terrorist organization People L. J. F. Brimble (1904–1965), English botanist L. J. Castile (born 1987), American football player L. J. Collier (born 1995), American football player L. J. Cooke (1868–1943), American basketball coach LJ Cryer (born 2001), American basketball player L. J. C. Daniels (1858–1949), American political activist L. J. Davis (1940–2011), American writer L. J. Fellenz (1882–1941), American politician L. J. Figueroa (born 1998), Dominican-American basketball player L. J. Foret (1930–2002), American musician L. J. Forman (1855–1933), American politician L. J. Fort (born 1990), American basketball player L. J. Greenberg (1861–1931), British journalist L. J. Hanifan (1879–1932), American economist L. J. Hepp (born 1978), American basketball coach L. J. Hoes (born 1990), American baseball player L. J. Jenkins (born 1987), American cowboy L. J. Maxwell (1851–??), American politician L. J. Mazzilli (born 1990), American baseball player L. J. McCray (born 1991), American football player L. J. Peak (born 1996), American basketball player LJ Reyes (born 1987), Filipino actress L. J. Roberts (born 1980), American textile artist L. J. Seneviratne (1899–??), Sri Lankan civil servant L. J. K. Setright (1931–2005), English journalist L. J. Sevin (1930–2015), American venture capitalist L. J. Shelton (born 1976), American football player L. J. Smith (born 1980), American football player L. J. Smith (author) (born 1965), American author L. J. van Zyl (born 1985), South African athlete Larry Johnson (basketball, born 1969), American basketball player Lawrence Jackson (born 1985), American football player Places La Jolla, California Ljubljana, the capital of Slovenia Science and technology System LJ, Gentzen's sequent calculus for intuitionist logic LaserJet, a printer brand name Lennard-Jones potential, a function used in chemical physics Lightweight Java, a programming language Other uses ǈ (digraph), a digraph used in some Slavic languages Lord Justice of Appeal See also Lje, a letter of the Cyrillic script