The Polish Volunteer Corps (PDK; Polish: Polski Korpus Ochotniczy; Ukrainian: Польський добровольчий корпус, romanized: Polskyi dobrovolchyi korpus, ПДК) is a group consisting of mercenaries from Poland fighting on the side of Ukraine during the Russian invasion of the country.

[4][3][5] The PDK fought in the Russian invasion of Ukraine against Russia.

[4][6] The PDK also fought in the Belgorod incursions with the Russian Volunteer Corps and Freedom of Russia Legion.

[2] The PDK posted images on Twitter that showed them fighting with the Russian Volunteer Corps and the Freedom of Russia Legion in Belgorod.

[8] The PDK is a special unit for reconnaissance and sabotage, which does not belong to the Ukrainian Foreign Legions, but is likely part of the Ministry of Foreign Affairs of Ukraine.