XN may refer to:
Xnet (former eXgae) is a non-profit activist platform that develops and promotes alternative models for cultural dissemination and royalty management.
XNU is the computer operating system kernel developed at Apple Inc. since December 1996 for use in the macOS operating system and released as free and open-source software as part of the Darwin operating system.
The XNOR gate (sometimes, EXNOR, ENOR, and, rarely, NXOR, XAND) is a digital logic gate whose function is the logical complement of the exclusive OR (XOR) gate.
XnView is an image organizer and general-purpose file manager used for viewing, converting, organizing and editing raster images, as well as general purpose file management.
Xnc or X Northern Captain is a file manager program inspired by Norton Commander for various UNIX systems released under the GNU GPL.
Xnews is a freeware Usenet newsreader created by Luu Tran. It is written in Delphi, and it is 100% GNKSA 2.0 compliant.
GNU Xnee is a suite of programs that can record, replay and distribute user actions under the X11 environment.
In number theory, Fermat's Last Theorem (sometimes called Fermat's conjecture, especially in older texts) states that no three positive integers a, b, and c satisfy the equation an + bn = cn for any integer value of n greater than 2. The cases n = 1 and n = 2 have been known to have infinitely many solutions since antiquity.
Xnaheb is an archaeological site of the pre-Columbian Maya civilization, one of five primary sites identified in the southern Belize region.