János Telegdy (Hungarian: Telegdy János, Slovak: Ján Telegdy; 1575–1647) was a Roman Catholic prelate who served as Archbishop of Kalocsa (1623–1647), Bishop of Nyitra (1619–1623), Bishop of Várad (1613–1619), and Bishop of Bosnia (1611–1613).^[1][2][3]

János Telegdy was born in Érsekújvár, Kingdom of Hungary (today Nové Zámky, Slovakia) in 1575 and ordained a priest in the Diocese of Esztergom on 10 February 1594.^[4][5] On 27 January 1610, he was appointed during the papacy of Pope Paul V as Bishop of Bosnia.^[1][4][5] On 25 September 1611, he was consecrated bishop by Roberto Francesco Romolo Bellarmino, Cardinal-Priest of San Matteo in Merulana, with Antonio d'Aquino, Bishop of Sarno, and Giulio Sansedoni, Bishop Emeritus of Grosseto, serving as co-consecrators.^[4][5] In 1613, he was appointed during the papacy of Pope Paul V as Bishop of Várad.^[4] On March 1619, he was appointed during the papacy of Pope Paul V as Bishop of Nyitra.^[4] In 1623, he was appointed during the papacy of Pope Gregory XV as Archbishop of Kalocsa.^[4] In 1624, he was once again appointed during the papacy of Pope Gregory XV as Bishop of Nitra.^[4] He served as Archbishop of Kalocsa until his death in 1647.^[4]

While bishop, Telegdy was the principal co-consecrator of:^[4]

• János Pyber de Gyerkény, Bishop of Pécs (1614);
• Péter Pázmány, Archbishop of Esztergom (1617);
• István Sennyey, Bishop of Vác (1627);
• György Drašković, Bishop of Pécs (1630); and
• Imre Lósy, Bishop of Várad (1631).