Liste over statsoverhoveder i 257

Afrika

Vakataka - Vindhyasakti , kejser ( 250 - 270 )
Ghassanids - Jafna I ibn Amr , konge ( 220 - 265 )
Gupta - Sri Gupta , Maharaja ( 240 - 280 )
Dhanyavadi - Tyuriya Patipat , konge ( 245 - 298 )
Western Kshatrapas - Rudrasena II , Mahakshatrap ( 255 - 277 )
Iberia - Mithridates IV , konge ( 249 - 265 )
Kina ( periode med tre kongeriger ):
- Wei :
  - Cao Mao , kejser ( 254-260 ) _
  - Sima Zhao , regent ( 255-265 )
- Wu :
  - Sun Liang , kejser ( 252-258 ) _
  - Sun Chen , regent ( 256-258 )
- Shu - Liu Shan , kejser ( 223-263 )_
Korea ( periode med tre stater ):
- Konføderationen af Kaya - Kodyn , van ( 199 - 259 )
- Goguryeo - Jungcheon , taewang ( 248 - 270 )
- Baekje - Koi , konge ( 234-286 )_ _
- Silla - Cheomhae , isagim ( 247 - 261 )
Kushan rige - Kanishka III , konge ( 255 - 275 )
Pagan - Hti Min Ying , konge ( 242 - 299 )
Persien (sassanider) - Shapur I , Shahinshah ( 241 - 272 )
Rajarata - Gotabhaya , konge ( 254-267 )_ _
Toba - Toba Liwei , leder ( 219 - 277 )
Chera :
- Ilamcheral Irumporai , konge ( 241-257 ) _
- Perumkadungo , konge ( 257-287 ) _ _
Japan - Jingu Kogo , regent( 201-269 )