| Official Name: | Radyvyliv |
| Native Name: | Ukrainian: Радивилів |
| Other Name: | Yiddish: ראדזיווילוב Polish: Radziwiłłów |
| Subdivision Type: | Country |
| Subdivision Type1: | Oblast |
| Subdivision Name1: | Rivne Oblast |
| Subdivision Type2: | Raion |
| Subdivision Name2: | Dubno Raion |
| Established Title: | First mentioned |
| Established Date: | 1564 |
| Established Title1: | City rights |
| Established Date1: | 1940 |
| Leader Title: | Mayor |
| Population As Of: | 2022 |
| Population Total: | 10427 |
| Pushpin Map: | Ukraine Rivne Oblast#Ukraine |
| Coordinates: | 50.1286°N 25.2644°W |
| Postal Code Type: | Postal code |
| Subdivision Type3: | Hromada |
| Subdivision Name3: | Radyvyliv urban hromada |
Radyvyliv (Ukrainian: Радивилів; Russian: Радивилов|Radivilov; Polish: Radziwiłłów; Yiddish: ראדזיווילוב|Radzivilov) is a small city in Rivne Oblast (region) of western Ukraine. It was the administrative center of the former Radyvyliv Raion (district) until its dissolution in 2020, and is located south-west of the oblast capital, Rivne, near European route E40. The nearest larger cities are Dubno and Brody; the latter being 10km (10miles) away. In Soviet times, from 1939 to 1992, the city was known as Chervonoarmiisk (Ukrainian: Червоноармійськ|Červonoarmijs'k, Russian: Червоноармейск|Chervonoarmeysk). Population:
In the 14th century, together with whole Volhynia, Radyvyliv was annexed by the Grand Duchy of Lithuania. Following the 1569 Union of Lublin, the town was transferred to the Kingdom of Poland, where it remained for over 200 years. As a result of the Partitions of Poland, Radziwiłłow, as it was called, became a town of the Kremenetsky Uyezd in the Volhynian Governorate of the Russian Empire.
In the late 1800s, the Jewish population reached 4,000. Between World War I and the civil war between Ukrainian nationalists and Bolsheviks, the Jewish population declined to around 2,000.
During the January Uprising, a unit of Jozef Wysocki operated in the area of Radyvyliv. After World War I, the town returned to Poland, and was part of Dubno County, Volhynian Voivodeship. Its residents were Jewish (50%), Ukrainian (31%), and Polish (17%). During the Volhynian Genocide, ethnic Poles from villages in the area fled to the town, to escape Ukrainian nationalists. Almost all those who survived the slaughter left Radyvyliv, and settled in the People's Republic of Poland’s Recovered Territories.
During the Second World War Axis forces occupied the town since June 1941 until March 1944.
In January 1989 the population was 10 353 people.[1] [2]