Irshansk (; ) is a rural settlement in Korosten Raion, Zhytomyr Oblast, Ukraine. The population was .
Irshansk is, together with Vilnohirsk, the centre of the Ukrainian titanium ore industry.
Until 26 January 2024, Irshansk was designated as an urban-type settlement. On this day, a new law entered into force which abolished the status and Irshansk becoming a rural settlement.
According to the 2001 census, the population of Irshansk was 6,312.
Languages spoken natively by residents are: