List of Heads of State in 291 - 292 - List of Heads of State in 293 - List of Heads of State by year
Africa
- The kingdom of Meroit (Kush) - Jeshbeheamani , king ( 286 - 306 )
Asia
- Armenia - Tiridat III , king ( 287 - 330 )
- Wakataka - Prazarasena I , Emperor ( 270 - 330 )
- Hassanides - al-Harith I ibn Talabah , king ( 287 - 307 )
- Gupta - Ghatotkaca , Maharaja ( 280 - 319 )
- Dhanyavadi - Thuria Patipat , King ( 245 - 298 )
- Western Kshatraps - Bhartrdaman , Mahakshatrap ( 282 - 295 )
- Iberia - Mirian III , King ( 284 - 361 )
- China ( Western Jin ) -
- Hui-di (Sima Zhong), emperor ( 290 - 307 )
- Empress Jia Nanfeng , Regent ( 291-300 )
- Korea ( Three States Period):
- Kai Confederation - Kogil , Van ( 291 - 346 )
- Goguryeo -
- Seocheon , Thewan ( 270 - 292 )
- Ponsan , Thewan ( 292 - 300 )
- Baekje - Chekke , King ( 286 - 298 )
- Silla - Yure , Isagim ( 284 - 298 )
- Kushan kingdom - Vasudeva II , king ( 290 - 310 )
- Lahmids (Hira) - Amr I ibn Adi , king ( 268 - 295 )
- Pagan - Hti Min Ying , King ( 242 - 299 )
- Persia (Sassanids) - Bahram II , Shahinshah ( 276 - 293 )
- Rajarat - Mahasena King ( 277 - 304 )
- Toba - Toba Cho , leader ( 286 - 293 )
- Chera - Ilamkadungo King ( 287 - 317 )
- Japan - Odzin , Emperor ( 270 - 310 )
Europe
- Kingdom of the Bosporus - Fofors king ( 278 - 309 )
- Dumnonia - Karadok , ruler ( 290 - 305 )
- Ireland - Fiaha Sribtine , High King ( 285 - 322 )
- Roman Empire -
- Diocletian , Roman Emperor (East) ( 284 - 305 )
- Maximian , Roman Emperor (West) ( 286 - 305 )
- Afraniy Hannibalian , Consul ( 292 )
- Julius Asklepiodot , Consul ( 292 )
Diocletian
284-305
Roman emperor (East)Maximian
286-305
Roman emperor (West)Bahram II
276-293
Shahinshah of PersiaOjin
270-310
Japanese emperorMirian III
284-361
King of Iberia