KACY may refer to:

• the ICAO code for Atlantic City International Airport
• KACY, a radio station (102.5 FM) licensed to Arkansas City, Kansas, United States
• KVQT-LD, a low-power television station (channel 21) licensed to serve Houston, Texas, United, which held the call sign KACY-LP from 1996 to 2000
• KFXZ (AM), a radio station (1520 AM) licensed to serve Lafayette, Louisiana, United States, which held the call sign KACY from 1990 to 1996
• KTRP (AM), a radio station (1450 AM) licensed to Notus, Idaho, United States, which held the call sign KACY from 1984 to 1990
• KKZZ, a radio station (1520 AM) licensed to Port Hueneme, California, United States, which held the call sign KACY from 1958 to 1984
• KCAQ, a radio station (104.7 FM) licensed to serve Oxnard, California, which held the call sign KACY-FM from 1978 to 1983

• Speechless (Kelly Richey album)
• Speechless (Single)
• SpeechMagic
• Speech Manager
• Speech of Hermocrates at Gela
• Speech of hope
• Speechome
• Speech or Debate Clause
• Speech or Debate clause
• Speech pathologist
• Speech perception
• Speech problem
• Speech production
• Speech (public address)
• Speechreading
• Speech reading
• Speech recognition software for Linux
• Speech recognizer
• Speech science
• Speech scientist
• Speech scientists
• Speech scroll
• Speech scrolls
• Speech segment
• Speech segmentation