Dénes Szécsi de Felsőlendva (or Széchy; c. 1410 – 1 February 1465) was a Hungarian prelate and cardinal, who served as Archbishop of Esztergom from 1440 to 1465.

Pope Eugene IV confirmed him in that position on 20 April, however Szécsi was later elected Bishop of Eger on 5 July 1438.

His titular church (titulus ecclesiae) was the San Ciriaco alle Terme Diocleziane.

He held a provincial synod as archbishop of Esztergom in 1450 where he urged the restoration of monastic discipline and the institution of celibacy.

[2] In 1452 he received the title of Primate of Hungary from Pope Nicholas V. He also became envoy to the Holy See.