Lahij is a village and municipality on the southern slopes of Greater Caucasus within the Ismailli Rayon of Azerbaijan. Population is approximately 860 people who speak the Tat language.
Lahij is a notable place in Azerbaijan, with its authentic handicrafts traditions, particularly related to copper. The village's carpet and rug crafts are also well known in Azerbaijan and the South Caucasus. Lahij has an old sewage system (some experts claim that it was built 1000 – 1500 years ago). Due to frequent earthquakes local people have developed sophisticated and authentic construction techniques.