KNAI may refer to:

  • KNAI (AM), a radio station (860 AM) licensed to serve Phoenix, Arizona, United States
  • KNAI-FM, a radio station (88.3 FM) licensed to serve Phoenix, Arizona
  • KMVQ-FM, a radio station (99.7 FM) licensed to serve San Francisco, California, United States, which held the call sign KNAI-FM from 1975 to 1977