XY
- Aktenzeichen XY… ungelöst
- Castle (season 8)
- Flynas
- Function (mathematics)
- Kyle XY
- Michael Blumlein
- Pokémon X and Y
- Pokémon video game series
- Samael (band)
- Transport in Myanmar
- Variable (mathematics)
- X+Y
- X/Y
- XX (disambiguation)
- XY (magazine)
- XY Chelsea
- XY gonadal dysgenesis
- XY model
- XY problem
- XY sex-determination system
- Xy (digraph)
- Xyz (disambiguation)
- YX (disambiguation)