This is a list of state leaders in the 4th century (301–400) AD.
Americas: Mesoamerica [ edit ]
Mexico
Maya civilization
Monɡolia
China
Hui , Emperor (290–307)
Sima Lun , Emperor (301)
Huai , Emperor (307–311)
Min , Emperor (313–316)
Yuan , Emperor (317–323)
Ming , Emperor (323–325)
Cheng , Emperor (325–342)
Kang , Emperor (342–344)
Mu , Emperor (344–361)
Ai , Emperor (361–365)
Fei , Emperor (365–372)
Jianwen , Emperor (372)
Xiaowu , Emperor (372–396)
An , Emperor (396–419)
Japan
Korea
Cambodia
Indonesia
Indonesia: Java
Dewawarman VII, King (early 4th century)
Dewawarman VIII, King (early 4th century–362)
Jayasingawarman, King (358–382)
Dharmayawarman, King (382–395)
Purnawarman , King (395–434)
Indonesia: Kalimantan (Borneo)
Malaysia: Peninsular
Durbar Maharaja I, Maharaja (c.330–390)
DiMaharaja Putra, Maharaja (c.390–440)[citation needed ]
Vietnam
Northeast India
India
Konganivarman Madhava, King (350–370)
Madhava, King (370–390)
Harivarman, King (390–410)
Mayurasharma , Maharaja (345–365)
Kangavarma, Maharaja (365–390)
Bhageerath, Maharaja (390–415)
Pravarapura–Nandivardhana branch
Vatsagulma branch
Pakistan
Sri Lanka
Persia
Narseh , Shahanshah, King of Kings (293–302)
Hormizd II , Shahanshah, King of Kings (302–309)
Adur Narseh , Shahanshah, King of Kings (309)
Shapur II , Shahanshah, King of Kings (309–379)
Ardashir II , Shahanshah, King of Kings (379–383)
Shapur III , Shahanshah, King of Kings (383–388)
Bahram IV , Shahanshah, King of Kings (388–399)
Yazdegerd I , Shahanshah, King of Kings (399–420)
Emperor in civil war (284–285)
Sole Emperor (285–286)
Eastern Emperor (286–305)
Eastern Caesar (293–305)
Eastern Emperor (305–311)
Eastern Caesar (305–308)
Eastern Emperor (310–312)
Western Emperor (308–313)
Eastern Emperor (313–324)
Western Caesar (306–312)
Western Emperor (312–324)
Sole Emperor (324–337)
Eastern Emperor (337–350)
Sole Emperor (350–361)
Western Emperor (355–361)
Sole Emperor (361–363)
Eastern Emperor (364–378)
Eastern Emperor (379–392)
Emperor (392–395)
Junior Emperor (383–395)
Eastern Emperor (395–408)
Europe: British Isles [ edit ]
Ireland
These kings are generally thought historical, but dates are uncertain and naming some High Kings may be anachronistic or inaccurate.
Chrocus , leader (fl.260–306)
Mederic , petty king (early 4th century)
Chnodomarius , petty king (pre-350–357)
Gundomadus , petty king (fl.354–357)
Agenaric , petty king (fl.357)
Suomarius , petty king (fl.357–358)
Hortarius , petty king (fl.357–359)
Vestralpus , petty king (fl.359)
Urius , petty king (fl.359)
Ursicinus , petty king (fl.359)
Macrianius , petty king (fl.359)
Hariobaudes , petty king (fl.359)
Vadomarius , petty king (fl.359)
Rando , petty king (fl.368)
Vithicabius , petty king (360–368)
Priarius , petty king (?–378)
Europe: Southcentral [ edit ]
Caesar (285–286)
Western Emperor (286–305)
Western Caesar (293–305)
Western Emperor (305–306)
Western Caesar (305–306)
Western Emperor, in civil war (306–307)
Western Emperor (308–313)
Eastern Emperor (313–324)
Western Caesar (306–312)
Western Emperor (312–324)
Sole Emperor (324–337)
Emperor of Italy and Africa (337–340)
Western Emperor (340–350)
Eastern Emperor (337–350)
Emperor (350–361)
Western Emperor (355–361)
Sole Emperor (361–363)
junior Western Emperor (367–375)
Western Emperor (375–383)
junior Western Emperor (375–383)
Western Emperor (383–392)
Eastern Emperor (379–392)
Sole Emperor (392–395)
Tiridates III , client King under Rome (287–330)
Khosrov III , client King under Rome (330–339)
Tiran VII , client King under Rome (339–c.350)
Arsaces II (Arshak II) , client King under Rome (c.350–368)
Interregnum under Sasania
Pap , client King under Rome (370–374)
Varazdat , client King under Rome (374–378)
Arsaces III (Arshak III) , client King under Rome (378–387)
Vologases III , client King under Rome, Co-Ruler (378–386)
Khosrov IV , client King under Rome (387–389)
Vramshapuh , client King under Rome (389–417)
3rd millennium 2nd millennium 1st millennium 1st millennium BC 2nd millennium BC 4th–3rd millennia BC