High Speed or high-speed may refer to:

• High speed input (HSI) and High speed output (HSO), a technology used in microcontrollers such as the Intel MCS-96
• High Speed Interconnect (HSI or HSI-Bridge), a chip from Nvidia using AGP and PCI Express
• High-Speed Serial Interface (HSSI), a differential serial interface standard developed by Cisco Systems and T3plus Networking
• VHSIC (Very High Speed Integrated Circuits), a 1980s US government research and development program

• High-speed Internet, or broadband

• 125 High Speed Mode, Broadcom frame-bursting and compression technology for wireless LANs
• High speed Bluetooth, also called Bluetooth 3.0
• High-Speed Circuit-Switched Data (HSCSD), in GSM mobile communications
• High-speed data access, an IEC 61970 Component Interface Specification
• High Speed Link, a way to carry several voice channels over an SDH-like link
• High-speed multimedia radio (HSMM) or the hinternet, data networks built over amateur radio frequencies with off-the-shelf hardware
• High Speed OFDM Packet Access, a mobile telecommunications technology
• High Speed Packet Access (HSPA), a set of two mobile telephony protocols
  • High-Speed Downlink Packet Access (HSDPA), a 3G mobile telephony communications protocol
    • High-Speed Downlink Shared Channel (HS-DSCH), used in HSDPA (UMTS) to send downlink packets; called High-Speed to distinguish it from the generic downlink shared channel (DSCH) in UMTS
  • High-Speed Uplink Packet Access (HSUPA), a 3G mobile telephony communications protocol in
• High Speed Telegraphy (HST), competitions which challenge individuals to decode Morse code transmissions at high speeds
• High-speed transceiver logic (HSTL), a standard for signaling between integrated circuits
• High Speed Voice and Data Link (HVDL), a voice and data provisioning method allowing up to three voice channels and data on a copper pair
• Single-Pair High-speed Digital Subscriber Line (SPHSDSL), a type of DSL technology
• Very High Speed Digital Subscriber Line (VHSDSL) and Very High Speed Digital Subscriber Line 2 (VHSDSL2), types of DSL technology

• de [High Speed Cutting]
• de [High Speed Drilling]
• High speed steel (HSS or HS), used to manufacture machine tool bits

• High speed camera, a device for recording slow-motion playback films
• High speed digital microscope, a product from Keyence
• High speed photography, the science of taking pictures of very fast phenomena
• High Speed Photometer, a scientific instrument on the Hubble Space Telescope
• de [High-Speed-Synchronisation], a type of flash synchronization

• Eight-Foot High Speed Tunnel or Eight-Foot Transonic Tunnel, a wind tunnel at NASA's Langley Research Center
• High Speed Civil Transport (HSCT) or High-Speed Research (HSR) Program, a NASA program focused on passenger jet technology
• High-speed flight, a term for subsonic aerodynamics and theory
• High Speed Flight RAF, a small flight of the British Royal Air Force, formed to compete in the Schneider Trophy contest for racing seaplanes
• High speed turn off (HSTO) or High speed taxiway (HST), taxiways which allow aircraft to exit a runway at higher than normal speeds
• High speed wind tunnel (HSWT), also known as high subsonic or transonic, a type of wind tunnel

• M4 Tractor or M4 High-Speed Tractor, an artillery tractor used by the US Army from 1943

• High-speed rail, a type of rapid passenger rail transport
  • High-speed rail by country
  • List of high-speed trains
• High Speed Alliance, later NS Hispeed, a rail operator in The Netherlands
• High Speed Electric Locomotive, operated by Amtrak
• High Speed Freight Vehicle (HSFV), prototype rail vehicles developed by the British Rail Research Division
• de [High Speed Surface Transport] (HSST), a maglev regional transport system
• de [High Speed Train Europe] (HSTE or HTE), a joint project of Société Nationale des Chemins de fer Français and Deutsche Bahn
• High Speed 1 (HS1), or Channel Tunnel Rail Link, in the UK
• High Speed Line 1, HSL 2, HSL 3, and HSL 4, in Belgium
• InterCity 125, British Rail's high speed train fleet
• TGV (train à grande vitesse), a French rail service

• High-speed amphibian (HSA) vehicles, manufactured by Gibbs Technologies
• High-speed craft (HSC), also called a fastcraft or fast ferry, a water vessel for civilian use
  • Category:High-speed craft
• High-speed Sea Service, or Stena HSS, a class of craft developed and operated by the Stena Shipping Line for ferry service
• High speed transport, converted destroyers and destroyer escorts used to support amphibious operations in World War II and afterward

• High Speed (1920 film), a Hollywood film
• High Speed (1932 film), an American film
• High Speed (2002 film), a British-Italian film
• High Speed Jackknife Fighter, a fictional vehicle in the TV series Starcom: The U.S. Space Force
• de [High Speed Money], alternative title in Germany for the film Rogue Trader (film)

• High Speed (pinball), a 1986 pinball game
• High Speed (video game), a pinball video game based on Steve Ritchie's 1986 pinball machine
• The Getaway: High Speed II, a 1992 pinball game

• "High Speed," a song by 2Pac and Outlawz from Still I Rise (album) (1999)
• "High Speed," a song by Coldplay from their 2000 album Parachutes (album)
• The High Speed Scene, a power-pop band from California
• The High Speed Scene (EP), the self-titled second EP by band The High Speed Scene
• High Speed Digital Spirit Processing, the second album by PAX
• High Speed E.P. (album), the third and last release by PAX

• High Speed Digital Design: A Handbook of Black Magic, a 1993 book by Howard W. Johnson and Martin Graham
• High Speed Thrill Coaster, an amusement park ride in operation from 1955 to 2008

• High-speed door, a type of door used mainly in industrial settings
• AGM-88 HARM, AGM-88 High Speed Anti-Radiation Missile (HARM), a military missile