XP may refer to:
Science and technology Computing Windows XP, a Microsoft operating system Microsoft Office XP, a version of the software suite Athlon XP, a series of AMD microprocessors Extreme programming, a software development methodology XP (class), a complexity class in parameterized complexity
Medicine Xanthelasma palpebrarum, a cholesterol deposit in the eyelid Xeroderma pigmentosum, a genetic disorder
Other technology Ilford XP, a chromogenic black and white film made by Ilford Photo
Transport XP, United States aircraft designator, formerly for Experimental Pursuit, currently for Experimental Patrol Avelo Airlines (IATA code: XP), an American ultra-low-cost airline
Other uses XP Inc., a Brazilian investment management company Experience point, a unit for measuring a character's progress in role-playing games Purpleland (NATO country code XP), a fictitious country used in military operations
XP, an emoticon X phrase, in X-bar theory in linguistics Xp Lee, a Thailand-born American politician
See also
Chi Rho (☧, or chi-rho), a Christian symbol for Christ
10P (disambiguation) PX (disambiguation) XPS (disambiguation)