X5

X5 can mean:

*BMW X5, a luxury SUV
*X5 is the IATA code for Afrique Airlines
*Bell X-5, an experimental aircraft
*Intego X5 software, a range of security software for Mac OS X
*X-5 Galaxy
*X5 Computadores
*iAudio X5, a portable digital audio player
*X5 (Dark Angel)
*X-5, a character from the animated television series "Atomic Betty"
*Mega Man X5 the fifth game in the Mega Man X series.