High definition or HD may refer to:

The present page holds the title of a primary topic, and an article needs to be written about it. It is believed to qualify as a broad-concept article. It may be written directly at this page or drafted elsewhere and then moved to this title. Related titles should be described in High definition, while unrelated titles should be moved to High definition (disambiguation).

Look up high definition in Wiktionary, the free dictionary.

• Blu-ray Disc, the universal optical High Definition disc format
• HD Photo, former name for the JPEG XR image file format
• HDV, format for recording high-definition video onto magnetic tape
• HiDef, 24 frames-per-second digital video format
• High-Definition Multimedia Interface (HDMI), all-digital audio/video interface capable of transmitting uncompressed streams
• High-definition television (HDTV), television signals and apparatus with higher resolution than their contemporary counterparts
  • Ultra-high-definition television, a further step in television resolution, but not a successor.
• High-definition video, used in HD broadcasting, digital film, computer HD video file formats, and video games

• Dolby TrueHD, lossless audio compression codec
• DTS-HD Master Audio, lossless audio compression codec
• High Definition Compatible Digital, discontinued digital audio optical disc format
• High-definition audio, general marketing term for high fidelity audio products and services
• Intel High Definition Audio, 2004 Intel specification for hardware and associated drivers for Personal computer audio
• Wideband audio, also known as HD voice, is high definition voice quality for telephony audio

• "Hi-Definition", 2008 single from Lupe Fiasco's The Cool
• High Definition (Joe Morris album), 2008
• High Definition (Shootyz Groove album), 1999
• "High Definition", a single from Waterparks' 2019 album, Fandom

• High Definition (radio program), 2006 Canadian radio program
• High-definition map, used in autonomous driving

This disambiguation page lists articles associated with the title High definition.
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