XF may refer to:
The XFL was a professional American football league that played its only season in 2001. As originally conceived, the XFL was operated as a joint venture between the World Wrestling Federation (now known as WWE) and NBC.
Xfinity is a trade name of Comcast Cable Communications, LLC, a subsidiary of the Comcast Corporation, used to market consumer cable television, internet, telephone, and wireless services provided by the company.
Xfce (pronounced as four individual letters) is a free and open-source desktop environment for Unix and Unix-like operating systems, such as Linux, Solaris, and BSD.
XFS is a high-performance 64-bit journaling file system created by Silicon Graphics, Inc (SGI) in 1993. It was the default file system in SGI's IRIX operating system starting with its version 5.3. XFS was ported to the Linux kernel in 2001; as of June 2014, XFS is supported by most Linux distributions, some of which use it as the default file system.
XFree86 was an implementation of the X Window System. It was originally written for Unix-like operating systems on IBM PC compatibles and was available for many other operating systems and platforms.
Xfire (pronounced "X-Fire") was a proprietary freeware instant messaging service for gamers that also served as a game server browser with various other features.
The XFL is a proposed professional American football league owned by Vince McMahon's Alpha Entertainment.
XForms is an XML format used for collecting inputs from web forms. XForms was designed to be the next generation of HTML / XHTML forms, but is generic enough that it can also be used in a standalone manner or with presentation languages other than XHTML to describe a user interface and a set of common data manipulation tasks.
The XFL Draft was the only draft for the single-season XFL football league. The draft took place over a 3 day time period from October 28, 2000 to October 30, 2000 during which time a total of 475 players were selected by the league's 8 teams from a pool of approximately 1,600 or so eligible players.