XFD

XFD or xfd may refer to:
 * XML Form Definition, a user interface markup language
 * .xfd, a filename extension sometimes used for files in the Extensible Forms Description Language
 * Douglas XFD, a 1933 naval fighter aircraft prototype
 * McDonnell XFD-1 Phantom, a 1945 naval fighter aircraft prototype
 * The last column name in Microsoft Excel, XFD