Namesakes
Austrian Chancellors and Presidents:
1 chancellor
(chancellor) Ignaz Seipel 1922-1924; 1926-1929 
Austrian Dukes and Emperors:
3 archdukes
Archduke Leopold IV (a.k.a. Ignaz) 1657-1705
Archduke Joseph I (a.k.a. Ignaz) 1705-1711
Archduke Karl II (a.k.a. Ignaz) 1711-1740
Bohemian Kings:
3 kings
King Leopold I (a.k.a. Ignaz) 1656-1705
King Josef I (a.k.a. Ignaz) 1705-1711
King Karel II (a.k.a. Ignaz) 1711-1740
German Kings and Holy Roman Emperors:
3 king-emperors
King-Emperor Leopold I (a.k.a. Ignaz) 1658-1705
King-Emperor Joseph I (a.k.a. Ignaz) 1690-1711
King-Emperor Karl VI (a.k.a. Ignaz) 1711-1740
Greek Prime Ministers:
1 prime minister
Ignaz von Rudhart 1837
Hungarian Kings and Queens:
3 kings
King Lipót I (a.k.a. Ignaz) 1655-1705
King József I (a.k.a. Ignaz) 1687-1711
King Károly III (a.k.a. Ignaz) 1711-1740
Notable Scientists and Inventors:
1 physician
Ignaz Semmelweis 1818-1865
Olympic Medalists:
1 bronze
(bronze) Ignaz Berndaner 1976 ice hockey
Other Royalty:
1 prince
Franz Joseph II, Prince of Liechtenstein (a.k.a. Ignaz) 1938-1989 Liechtenstein