Dovbysh (Ukrainian: Довбиш; Polish: Dołbysz) is a rural settlement in Zviahel Raion, Zhytomyr Oblast, Ukraine.

The settlement was previously known as Markhlevsk (Ukrainian: Мархлевськ; Polish: Marchlewsk) after the Polish-born Soviet politician and civil activist Julian Marchlewski.

Population: 4,071 (2022 estimate)[1] In the 1920s Marchlewsk was an administrative center of Marchlewszczyzna, a Polish National Raion of Zhytomyr Okruha [ru].

[citation needed] During World War II, Jews of the town[2] were murdered in a mass execution perpetrated by an Einsatzgruppe.

On this day, a new law entered into force which abolished this status, and Dovbush became a rural settlement.