List of state leaders in 234

Africa

*Kush — unknown king (225–246)

Asia

*Armenia — Chosroes I, King of Armenia (197–238)
*Chera — Yanaikat-sey Mantaran Cheral, King of Chera (201–241)
*Iberia —
*#Vache, King of Iberia (216–234)
*#Bakur, King of Iberia (234–249)
*Korea (Three Kingdoms Period)
**Baekje —
**#Gusu, King of Baekje (214–234)
**#Saban, King of Baekje (234)
**#Goi, King of Baekje (234–286)
**Gaya Confederacy — Geodeung, King of Gaya (199–259)
**Goguryeo — Dongcheon, King of Goguryeo (227–248)
**Silla — Jobun, King of Silla (230–247)
*Kushan Empire — Kanishka II, King of Kushan (c. 226–240)
*Persia — Ardashir I of Persia, King of Persia (224–241)
*Shu Han — Liu Shan, Emperor of Shu Han (223–263)
*Tuoba — Tuoba Liwei, Chieftain of the Tuoba clan (219–277)
*Wei — Cao Rui, Emperor of Wei (226–239)
*Wu — Sun Quan, Emperor of Wu (222–252)

Europe

*Roman Empire — Alexander Severus, Roman Emperor (222–235)