János Petki de Ders (1572 – 23 October 1612) was a Hungarian noble and poet in the Principality of Transylvania, who served as Chancellor of Transylvania from March 1607 to 31 March 1608. He was the maternal grandfather of Prince Michael I Apafi.
PETKI János transilavanuja ĉefulo, poeto, kanceliero (Ders en 1572 – Brassó, 26-a de oktobro 1612). (eo)
János Petki de Ders (1572 – 23 October 1612) was a Hungarian noble and poet in the Principality of Transylvania, who served as Chancellor of Transylvania from March 1607 to 31 March 1608. He was the maternal grandfather of Prince Michael I Apafi. (en)