István Horthy, Jr., Hungarian physicist and architect was born on January 17, 1941.

István Horthy de Nagybánya II is a Hungarian physicist and architect, son of Hungarian deputy regent István Horthy and Ilona Edelsheim-Gyulai, and grandson of Admiral Miklós Horthy who served as Regent of Hungary from 1920 to 1944. In 1965 he converted to Islam and took the name Sharif Horthy. Horthy is a prominent member of the Indonesian spiritual association Subud, and has translated works by its founder, Subuh Sumohadiwidjojo, into English.