| İstisu | |
| Settlement Type: | Municipality |
| Pushpin Map: | Azerbaijan |
| Pushpin Mapsize: | 300 |
| Subdivision Type: | Country |
| Subdivision Name: |  Azerbaijan |
| Subdivision Type1: | Rayon |
| Subdivision Name1: | Khachmaz |
| Population Total: | 2236 |
| Timezone: | AZT |
| Utc Offset: | +4 |
| Utc Offset Dst: | +5 |
| Coordinates: | 41.6642°N 48.7806°W |
İstisu (till 2018 Müqtədir, also, Mukhtadir or Muxtedir[1]) is a coastal town and municipality in the Khachmaz Rayon of Azerbaijan. It has a population of 2,236. The municipality consists of the İstisu town and Vələmir village.[2]