| Gilgilçay | |
| Settlement Type: | Municipality |
| Pushpin Map: | Azerbaijan |
| Pushpin Mapsize: | 300 |
| Subdivision Type: | Country |
| Subdivision Name: |  Azerbaijan |
| Subdivision Type1: | Rayon |
| Subdivision Name1: | Siazan |
| Population Total: | 959 |
| Timezone: | AZT |
| Utc Offset: | +4 |
| Utc Offset Dst: | +5 |
| Coordinates: | 41.1442°N 49.0867°W |
Gilgilçay (also, Gil’gil’chay) is a village and municipality in the Siazan Rayon of Azerbaijan. It has a population of 959.
See also: Sasanian defense lines. The Gilgilchay defensive wall was built by the Sasanian Empire (488-531). The defensive line were constructed using a combination of mud brick, stone blocks, and baked bricks, and stretched from the shore of the Caspian Sea to the Babadag mountains in the west.[1] Not far from the Gilgilchay wall is the Shabran wall, located near Shabran village.[2]