| Koziatyn Raion | |
| Native Name: | Козятинський район |
| Native Name Lang: | uk |
| Settlement Type: | Raion |
| Flag Alt: | Flag of Koziatynskyi Raion |
| Shield Alt: | Coat of arms of Koziatynskyi Raion |
| Mapsize: | 125px |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Vinnytsia Oblast |
| Parts Type: | Subdivisions |
| Parts Style: | coll |
| P1: | 1 — city councils |
| P2: | 2 — settlement councils |
| P3: | 32 — rural councils |
| P4: | Number of localities: 1 — cities |
| P5: | |
| P6: | 67 — villages |
| P7: | — rural settlements |
| Established Title1: | Established |
| Established Date1: | 1923 |
| Established Title2: | Disestablished |
| Established Date2: | 18 July 2020 |
| Seat Type: | Admin. center |
| Seat: | Koziatyn |
| Leader Title: | Governor |
| Leader Name: | Oleksiy Lavrenyuk |
| Leader Title1: | Chairman |
| Unit Pref: | Metric |
| Area Total Km2: | 1120 |
| Population Total: | 37618 |
| 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: | 22100—22172 |
| Area Code Type: | Area code |
| Area Code: | +380 4342 |
| Website: | http://kazatin-rda.gov.ua |
Koziatyn Raion (Ukrainian: Козятинський район) was one of raions of Vinnytsia Oblast, located in southwestern Ukraine. The administrative center of the raion (district) was the city of Koziatyn which was not part of the district and was incorporated separately as a town of oblast significance. The raion was abolished and its territory was merged into Khmilnyk Raion on 18 July 2020 as part of the administrative reform of Ukraine, which reduced the number of raions of Vinnytsia Oblast to six.[1] [2] The last estimate of the raion population was