The 5th Nuclear Power Plant Defense Battalion is a battalion of the National Guard of Ukraine tasked with CBRN defense, specifically of the Rivne Nuclear Power Plant, and has seen action against Russian forces during the Russian invasion of Ukraine.

It was established in 1991 as a part of the Internal Troops of Ukraine to protect and guard the Rivne Nuclear Power Plant.

In 2014, it was transferred to the National Guard of Ukraine and the personnel of the Battalion were deployed to the ATO zone to take part in the War in Donbas.

[3] On 29 August 2023, an Anti-aircraft gunner of the battalion (Oleksandr Zarutskyi) was killed in combat.

[6] On 18 December 2023, two soldiers of the battalion (Volodymyr Yuriyovych Bal and Denisyuk Vladyslav Ivanovich) were killed in Robotyne.