X0 may refer to:
GrammarEdit
- X0, denoting a sentence component
- Zero-level projection, in X-bar theory
- Head (linguistics), or nucleus
Science, technology and mathematicsEdit
- SpaceShipOne flight 15P, a 2004 private spaceflight
- X/0, division by zero
- Turner syndrome, a disorder in which all or part of an X chromosome is absent
- X0 sex-determination system, as found in some insects
VehiclesEdit
- X0, a smaller rigged version of an X1 (dinghy)
- X0, running number for N700 Series Shinkansen prototype from 2014 to 2021
See alsoEdit
- XO (disambiguation)
- X00, a popular DOS-based FOSSIL driver which was commonly used in the mid 1980s to the late 1990s
- 0X (disambiguation)