István Kertész may refer to:

• István Kertész (conductor) (1929–1973), Hungarian orchestral and operatic conductor
• István Kertész (diplomat) (1904–1986), Hungarian diplomat

• Lord Nelson (ship)
• Lord Nevoy
• Lord Newbattle
• Lord Noel-Baker
• Lord Oblitey Commey
• Lord of Adelon
• Lord of Albarracín
• Lord of Animals
• Lord of Arenberg
• Lord of Argos and Nauplia
• Lord of Balvaird
• Lord of Bamburgh
• Lord of Bourbon
• Lord of Cattaro
• Lord of Dance
• Lord of Death
• Lord of Dorchester
• Lord of Everything
• Lord of Ferrara
• Lord of Formosa
• Lord of Grobbendonk
• Lord of Haifa
• Lord of Heinsberg
• Lord of Joinville
• Lord of Kilbride