| Mykolaiv Raion | |
| Native Name: | Миколаївський район |
| Native Name Lang: | uk |
| Settlement Type: | Raion |
| Flag Alt: | Flag of Mykolaiv Raion |
| Shield Alt: | Coat of arms of Mykolaiv Raion |
| Coordinates: | 49.5006°N 23.9733°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Lviv Oblast |
| Parts Type: | Subdivisions |
| Parts Style: | coll |
| P1: | — city councils |
| P2: | — settlement councils |
| P3: | — rural councils |
| P4: | Number of localities: — cities |
| P5: | |
| P6: | 56 — villages |
| P7: | — rural settlements |
| Established Title1: | Established |
| Established Date1: | 1939 |
| Established Title2: | Disestablished |
| Established Date2: | 18 July 2020 |
| Seat Type: | Admin. center |
| Seat: | Mykolaiv |
| Leader Title: | Governor |
| Leader Title1: | Chairman |
| Unit Pref: | Metric |
| Area Total Km2: | 675 |
| Population Total: | 62537 |
| Population As Of: | 2020 |
| Population Density Km2: | auto |
| Timezone1: | EET |
| Utc Offset1: | +02:00 |
| Timezone1 Dst: | EEST |
| Utc Offset1 Dst: | +03:00 |
| Postal Code Type: | Postal index |
| Postal Code: | 81600—81659 |
| Area Code Type: | Area code |
| Area Code: | 380-3241 |
| Website: | http://www.mykolaiv.lviv.ua/ Mykolaivskyi Raion |
Mykolaiv Raion (Ukrainian: Миколаївський район) was a raion (district) in Lviv Oblast in western Ukraine. Its administrative center was Mykolaiv. The raion was abolished on 18 July 2020 as part of the administrative reform of Ukraine, which reduced the number of raions of Lviv Oblast to seven. The area of Mykolaiv Raion was merged into Stryi Raion.[1] [2] The last estimate of the raion population was
It was established in 1939.
At the time of disestablishment, the raion consisted of three hromadas:[3]