AHZ may refer to:
- Attohertz, in frequency measurement, 10−18 Hz
- Alpe d'Huez Airport's IATA designation
- Arnhem Zuid railway station's code
- Academy of Foreign Trade in Lwów or Akademia Handlu Zagranicznego
- Hungarian State Symphony Orchestra or Állami Hangverseny Zenekar
- Ahz, a fictional place in the 1981 episode "Scooby's Trip to Ahz" of Scooby-Doo and Scrappy-Doo
