Ruzhyn Raion (Ukrainian: Ружинський район) was a raion (district) of Zhytomyr Oblast, northern Ukraine.

Its administrative centre was located at Ruzhyn.

The raion covered an area of 1,002 square kilometres (387 sq mi).

The raion was abolished on 19 July 2020 as part of the administrative reform of Ukraine, which reduced the number of raions of Zhytomyr Oblast to four.

This article about a location in Zhytomyr Oblast is a stub.