Gergely Bornemissza (1526, Pécs – 1555, Constantinople) was a Hungarian soldier and national hero.
Not much is known of his early life, although he is known to have been married twice. He is believed to have been an educated man, and a Lutheran.
He is mainly known for his role as an explosives expert in the Siege of Eger (1552).
After the siege, he was given command of the Castle of Eger. In 1554 he was captured by the Turks, and was executed by hanging in Constantinople after he refused to betray secrets about the defences at Eger.
- Cushing, George: Introduction to Corvina edition of Eclipse of the Crescent Moon
- Csiffáry, Gergely: Bornemissza Gergely deák életrajza. Veres, Gábor szerk.: Agria 45. (Az Egri Múzeum Évkönyve - Annales Musei Agriensis, 2009)
- Sugár, István: Bornemissza Gergely deák élete