WARSAW, Dec 14 (Reuters) - Poland's biggest oil refiner PKN Orlen PKN.WA said on Wednesday it bought 1 million barrels of Iranian Light oil from National Iranian Oil Company (NIOC).

The state-run PKN, which mostly refines Russian oil, said that the Iranian oil will be delivered to Naftoport in Gdansk in January and then transported to PKN's refinery in Plock.

"The processing of the feedstock most recently delivered from Iran will be a basis for further plans regarding supplies from that direction," PKN said in a statement.

Earlier this year PKN signed and extended agreement to receive oil from Saudi Aramco.



(Reporting by Agnieszka Barteczko; Editing by Lidia Kelly) ((agnieszka.barteczko@thomsonreuters.com; +48226539700; Reuters Messaging: agnieszka.barteczko.reuters.com@thomsonreuters.net))