Eqlid (Persian: اقليد,) is a city in the Central District of Eqlid County, Fars province, Iran, serving as capital of both the county and the district.

During the Achaemenid empire its name was Azargarta.(source: Parto-e vahid dar asrare takhte jamshid پرتو وحید در اسرار تخت جمشید)

Eqlid's name might come from "kelid," which means key in Persian. Up to the recent years, older people used to call it "kelil." The main reason behind this name is that it was the main gateway to Fars, and specially Persepolis in the old ages and the road called "royal road" used to pass through it. other routes to Persepolis were mountainous and difficult to pass.

Legend says that Eghlid was built by three brothers called Elias, Aslam, and Orjam. There are three main neighborhood (which used to be three castles) in Eghlid bearing the name of these three brothers: Eliasan, Aslaman, Orjaman.

Eqlid has many historical places dating back to pre-Islamic era.

There is an old mosque in the center of the city (jame' mosque)

In the local dialect of Eqlid, the city’s name is pronounced as Kilil, a phonetic evolution from the formal Eqlid due to regional sound shifts.

Several theories have been proposed regarding the origin of the name: