XD may refer to:
xD-Picture Card is a flash memory card format, formerly used in digital cameras made by Olympus and Fujifilm.
XDR DRAM or extreme data rate dynamic random-access memory is a high-performance RAM interface and successor to the Rambus RDRAM it is based on, competing with the rival DDR2 SDRAM and GDDR4 technology.
XDCAM is a series of products for digital recording using random access solid-state memory media, introduced by Sony in 2003. Four different product lines – the XDCAM SD, XDCAM HD, XDCAM EX and XDCAM HD422 – differ in types of encoder used, frame size, container type and in recording media.
XDA Developers (also known simply as XDA; often stylized as xda-developers) is a mobile software development community of over 6.6 million members worldwide, started on 20 December 2002. Although discussion primarily revolves around Android, members also talk about many other operating systems and mobile development topics.
xDEATHSTARx /ˈdɛθstɑːr/ is an American Christian metalcore band from Redlands, California. All of the members are straight edge and they incorporate both Christian and straight edge themes within their music, with their view of the loss of values in modern society.
XDCC (Xabi DCC or eXtended DCC) is a computer file sharing method which uses the Internet Relay Chat (IRC) network as a host service.
XDXF (XML Dictionary eXchange Format) is a project to unite all existing open dictionaries and provide both users and developers with universal XML-based format, convertible from and to other popular formats like Mova, PtkDic, StarDict.