Multichannel or multi-channel may refer to:

• Multichannel audio, i.e.
  • Stereophonic sound, namely two channel audio
  • Surround sound, more than two channel audio
  • Ambisonics, a studio or live way of recording with many channels
• Offering multiple audio tracks on a broadcast channel: see Sound multiplex in broadcasting
  • Multichannel television sound, an American standard for analogue television
• Having or offering multiple television channels: see Multichannel television
  • Digital multicast television network
  • Multichannel Multipoint Distribution Service (MMDS), a standard for analogue television
  • Multichannel television in Canada
  • Multichannel television in the United States
• Multichannel marketing
• Multi-channel network, a YouTube classification of for-profit channels
• Multichannel News
• Multicanal (Argentina), a defunct Argentine subscription television and Internet provider company
• MPEG Multichannel
• MADI, Multichannel Audio Digital Interface
• McASP, Multichannel Audio Serial Port
• Scanning Multichannel Microwave Radiometer
• Joint multichannel trunking and switching system
• Multibus, Multichannel I/O Bus
• MVDDS, Multichannel Video and Data Distribution Service
• MMDF, Multichannel Memorandum Distribution Facility