List of state leaders in 452

Africa

*Kingdom of the Vandals and Alans - Geiseric, King of the Vandals and Alans (428-477)

America

*Palenque - "Casper", Ajaw of Palenque (435-487)

Asia

*China (Southern and Northern Dynasties) -
** Liu Song Dynasty - Emperor Wen, Emperor of Liu Song (424-453)
** Northern Wei Dynasty
***Emperor Taiwu, Emperor of Northern Wei (424-452)
***Prince Yin of Nan'an, Emperor of Northern Wei (452)
***Emperor Wencheng, Emperor of Northern Wei (452-465)
*Gupta Empire - Kumara Gupta I, Gupta Emperor (415-455)
*Japan (Kofun Era) - Emperor Ingyō, Emperor of Japan (c. 411-c. 453)
*Korea (Three Kingdoms) -
**Baekje - Biyu, King of Baekje (427-454)
**Goguryeo - Jangsu, King of Goguryeo (413-490)
**Silla - Nulji, King of Silla (417-458)
*Pallava - Simha Varman II, King of Pallava (438-460)

Europe

*Burgundy
** Gundioc, King of Burgundy (436-473)
** opposed by Chilperic I (443-c.480)
*Byzantine Empire - St. Marcian, Byzantine Emperor (450-457)
*Galicia (Gallaecia) - Rechiar, Suebi King of Galicia (448–456)
*Hun Empire - Atilla, King of the Huns (c.437-453)
*Ireland - Lóegaire mac Néill, High King of Ireland (c. 428-c. 458)
*Salian Franks - Merowig, King of Salian Franks (447-457)
*Visigoths - Thorismund, King of the Visigoths (451-453)
*Western Roman Empire - Valentinian III, Western Roman Emperor (425-455)

Middle East

*Sassanid Empire - Yazdegerd II, Sassanid King (438-457)