| Official Name: | Dovbysh |
| Settlement Type: | Rural settlement |
| Pushpin Map: | Ukraine Zhytomyr Oblast#Ukraine |
| Subdivision Type: | Country |
| Subdivision Type1: | Oblast |
| Subdivision Type2: | Raion |
| Subdivision Name2: | Zviahel Raion |
| Timezone1: | EET |
| Utc Offset: | +2 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +3 |
| Native Name: | Довбиш |
| Native Name Lang: | uk |
Dovbysh (uk|Довбиш; pl|Dołbysz) is a rural settlement in Zviahel Raion, Zhytomyr Oblast, Ukraine. The settlement was previously known as Markhlevsk (uk|Мархлевськ; pl|Marchlewsk) after the Polish-born Soviet politician and civil activist Julian Marchlewski. Population:
In the 1920s Marchlewsk was an administrative center of Marchlewszczyzna, a Polish National Raion of . Later it was incorporated into Kyiv Oblast.
During World War II, Jews of the town[1] were murdered in a mass execution perpetrated by an Einsatzgruppe.[2]
Until 26 January 2024, Dovbush was designated urban-type settlement. On this day, a new law entered into force which abolished this status, and Dovbush became a rural settlement.[3]