Look up XY in Wiktionary, the free dictionary.

XY, or xy, or any of its variants may refer to:

• Pokémon X and Y, a pair of 2013 role-playing video games in the Pokémon series
• XY (magazine), a gay male youth magazine that also operated a personals website
• X, Y, a 1993 novel by Michael Blumlein
• X&Y, a 2005 album by Coldplay
• Xy, a member of the band Samael

• Aktenzeichen XY… ungelöst, a German television series first broadcast in 1967
• Kyle XY, an American sci-fi television series first broadcast in 2006
• Pokemon The Series: XY, the 17th season of Pokémon and the first and titular season of Pokémon the Series: XY, first broadcast in 2013; named after the games
• X+Y, a 2014 British film
• X/Y, a 2014 American film
• X&Y (film), a 2018 Swedish film
• "XY", an episode of the 8th season of the television series Castle, first broadcast in 2018
• XY Chelsea, a 2019 American-British documentary film about Chelsea Manning

• the XY model, a lattice model of statistical mechanics
• the XY problem, a problem of communication in software engineering and technical support situations

• XY sex chromosomes, in the XY sex-determination system found in many animals
  • a male, an organism typically having one X and one Y chromosome and producing sperm gametes that fuse with a female gamete during sexual reproduction
  • XY gonadal dysgenesis, also known as Swyer syndrome, a type of hypogonadism resulting in a phenotypical female with functionless gonads

• x and y, symbols commonly used to denote variables in mathematical formulas
• (x, y)-coordinates, a system used to locate a point in two dimensions according to the cartesian coordinate system
• X and Y, symbols conventionally used to denote the domain and codomain of a function
• The definition of an f(x, y) function that produces a hyperbolic paraboloid

• XY, IATA code of Flynas (formerly Nas Air), a Saudi low-cost airline
• Xy (digraph), a digraph of the Romanized Popular Alphabet, used to write Hmong
• XY, aircraft registration prefix for Myanmar

• All pages with titles containing XY
• XX (disambiguation)
• Xyz (disambiguation)
• YX (disambiguation)

This disambiguation page lists articles associated with the title XY.
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