| Novobuzskyi Raion | |
| Native Name: | Новобузький район |
| Native Name Lang: | uk |
| Settlement Type: | Raion |
| Flag Alt: | Flag of Novobuzskyi Raion |
| Shield Alt: | Coat of arms of Novobuzskyi Raion |
| Mapsize: | 250px |
| Coordinates: | 47.6569°N 32.4819°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Mykolaiv Oblast |
| Parts Type: | Subdivisions |
| Parts Style: | coll |
| P1: | 1 — city councils |
| P2: | 0 — settlement councils |
| P3: | 12 — rural councils |
| P4: | Number of localities: 1 — cities |
| P5: | |
| P6: | 55 — villages |
| P7: | 2 — rural settlements |
| Established Title1: | Established |
| Established Date1: | 1922 |
| Established Title2: | Disestablished |
| Established Date2: | 18 July 2020 |
| Seat Type: | Admin. center |
| Seat: | Novyi Buh |
| Leader Title: | Governor |
| Leader Name: | Viktor Serbin |
| Leader Title1: | Chairman |
| Unit Pref: | Metric |
| Area Total Km2: | 1243 |
| Population Total: | 29,851 |
| 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: | 55600—55654 |
| Area Code Type: | Area code |
| Area Code: | +380 5151 |
Novyi Buh Raion (Ukrainian: Новобузький район) was a subdivision of Mykolaiv Oblast of Ukraine. Its administrative center was the town of Novyi Buh. The raion was abolished on 18 July 2020 as part of the administrative reform of Ukraine, which reduced the number of raions of Mykolaiv Oblast to four. The area of Novyi Buh Raion was merged into Bashtanka Raion.[1] [2] The last estimate of the raion population was
At the time of disestablishment, the raion consisted of three hromadas,[3]