Rex may refer to: * Rex (title) (Latin: king, ruler, monarch), a royal title ** King of Rome (Latin: Rex Romae), chief magistrate of the Roman Kingdom

People

* Rex (given name), for people with the given name * Rex (surname), for people with the surname * Rex (artist), American gay pornographic artist * Rex (singer), Li Xinyi (born 1998), Chinese singer and songwriter * Rex King (wrestler), Timothy Well (1961–2017), American professional wrestler * Mad Dog Rex, professional wrestler from NWA All-Star Wrestling, All-Star Wrestling

Places

* Rex, Georgia, an unincorporated community in the United States * Rex, North Carolina, a census-designated place in the United States * Rex River, Washington, United States * Mount Rex, an isolated mountain in Antarctica * Port Rex Technical High School , a technical high school in South Africa.

Animals

* ''-rex'', a List of commonly used taxonomic affixes, taxonomic suffix used to describe certain large animals * Rex (dog), once owned by Ronald Reagan * Rex (search and rescue dog), a dog that received a 1945 Dickin Medal for bravery * Rex (horse) or Rex the Wonder Horse, star of 15 Hollywood motion pictures * Rex rabbit, a breed of rabbit ** Rex mutation, a type of mutation affecting the fur of the rex rabbit

Transportation

Land

* BMW i3 REx, range extender variant of the all-electric BMW i3 * Subaru Rex, a Japanese Kei car * Subaru Impreza WRX, a car referred to as "Rex" * Rex-Acme, a premier British motorcycle company of early 1900s, originally ''Rex'' * Rex (automobile) of Detroit, c. 1914 * Rex-Simplex and Rex, brand names used by the German company Hering & Richard which produced motor vehicles between 1901 and 1923

Sea

* SS Rex, SS ''Rex'', an Italian luxury ship, sunk by Allied bombers off the coast of Slovenia in 1944 * SS ''Rex'', a floating casino off the coast of Southern California from the late 1930s to the late 1940s, run by mobster Anthony Cornero#Floating casinos, Anthony Cornero

Air

* Dudek Rex, a Polish paraglider design * Rex Airlines, an Australian airline * The IATA airport code for the General Lucio Blanco International Airport in Reynosa, Mexico * Reporting name for the Kawanishi N1K Japanese Fighter

Energy and fuels

* Rockies Express Pipeline, a natural gas pipeline built across the United States * Rex Energy, a defunct company engaged in natural gas exploration * Rex International Holding Limited, an oil and gas company headquartered in Singapore

Music

* Rex (musical), ''Rex'' (musical), a stage musical, with music by Richard Rodgers and lyrics by Sheldon Harnick * Rex (band), an alternative rock band * ''Rex (Live at the Fillmore)'', a 2008 album by Keller Williams, Keith Moseley and Jeff Austin * Rex Records (disambiguation), several record companies * Rex Orange County, an English recording artist and songwriter

Computing and technology

* REX prefix, used by the x86-64 instruction encoding * Rexx (originally named Rex), a computer programming language * REX, an audio file format; see REX2 * .rex (disambiguation), file extension used by Rexx scripts and REX2 audio files * REX 5000, a series of personal digital assistants * REX 6000, a series of personal digital assistants * Rex (software), a remote execution, configuration management and software deployment system * Rex (video game), ''Rex'' (video game), a 1988 game for the ZX Spectrum and Amstrad CPC * REX OS, a real-time operating system developed by Qualcomm * Samsung REX, a series of affordable feature phones * REX, an abbreviation for "Access control#Access control system components, request to exit", a push-button or motion detector used for access control

Fictional characters

Film

* Rex Lewis, a character from ''G.I. Joe: The Rise of Cobra'' * Rex Manning, the former 80s pop idol in the 1995 film ''Empire Records'' * Rex (Toy Story), Rex (''Toy Story''), a toy dinosaur character from Disney/Pixar's ''Toy Story'' series * Rex, the sheepdog from the 1995 Academy Award-winning film ''Babe (film), Babe'' * Rex, a Tyrannosaurus Rex, a character in animated film ''We're Back! A Dinosaur's Story (film), We're Back! A Dinosaur's Story'' * Rex Kwon Do, a martial arts choreographer in the 2004 cult film ''Napoleon Dynamite'' * Rex, Lori's boss in the film ''Ted (film), Ted'' * Rex Motion Picture Company, was an early film production company in the United States from 1910 into 1917 * Rex (film), ''Rex'' (film), alternative name for ''Megan Leavey'', 2017

Animated television series

* Rex Banner, a one-time character in ''The Simpsons'' appearing in the episode "Homer vs. the Eighteenth Amendment" * Rex Raptor, a recurring character in the 4kids version of ''Yu-Gi-Oh! Duel Monsters, Yu-Gi-Oh!'' * Rex Salazar, the main title character from the animated show ''Generator Rex'' * Rex, the title character in the claymation series ''Rex the Runt'' * Captain Rex, the clone trooper captain who served as General Anakin Skywalker's second-in-command in the series ''Star Wars: The Clone Wars''

Live-action television series

* Rex Balsom, a character on the soap opera ''One Life to Live'' * Rex Brady, a character on the soap opera ''Days of Our Lives'' * Rex Buckland, a character in the series ''Charmed'' * Rex (police dog), a fictional character from the police drama television series ''Inspector Rex'' * Rex (Slovak TV series), ''Rex'' (Slovak TV series), a 2017 series based on the Austrian original * Rex Van de Kamp, a character in the series ''Desperate Housewives'' * Rex Britten, a character in the series ''Awake'' * Rex Powers, a dummy in the series ''Victorious'' * Rex, a canine character in the Canadian police procedural drama series ''Hudson & Rex''

Other fiction

* Rex (NX Files), Rex (''NX Files''), a character in the action adventure web-show ''NX Files'' * Metal Gear REX, a mecha from the video game ''Metal Gear Solid'' * Rex the Wonder Dog, a DC Comics superhero dog * ''Rex Morgan, M.D.'', a comic strip and its title character * Rex, the main protagonist and player character from the video game ''Xenoblade Chronicles 2'' * Lord Rex, a super evolve Vivosaur character from the sequel video game ''Fossil Fighters: Champions'' * Rex Mason, a DC Comics superhero known as Metamorpho

Other uses

* Rex parade, of the Carnival season in New Orleans ** Rex, king of the New Orleans Mardi Gras Carnival * Rex Architecture P.C., an architecture and design firm based in New York City, United States * Rex 84, a plan by the United States to test their ability to detain large numbers of American citizens * Rex (chair), a foldable chair * Rex, the dinosaur mascot of the Calgary Dinos athletic teams at the University of Calgary * MP412 REX, a Russian handgun * REX, the Regents External Degree program, a former name of Excelsior College * Rex Center, a former building in Lowell, Massachusetts * Oligosaccharide reducing-end xylanase, an enzyme * REX (New Horizons), a radio science experiment on the Pluto flyby space probe