Liste over statsoverhoveder i 255

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 )
Vestlige Kshatrapas :
- Damayadasri III , Mahakshatrap ( 251-255 ) _
- Rudrasena II , Mahakshatrap ( 255-277 ) _
Iberia - Mithridates IV , konge ( 249 - 265 )
Kina ( periode med tre kongeriger ):
- Wei :
  - Cao Mao , kejser ( 254-260 ) _
  - Sima Shi , regent ( 251-255 )
  - Sima Zhao , regent ( 255-265 )
- Wu :
  - Sun Liang , kejser ( 252-258 ) _
  - Sun Jun , regent ( 253 - 256 )
- 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 )
Pagan - Hti Min Ying , konge ( 242 - 299 )
Persien (sassanider) - Shapur I , Shahinshah ( 241 - 272 )
Toba - Toba Liwei , leder ( 219 - 277 )
Chera - Ilamcheral Irumporai , konge ( 241-257 )_
Japan - Jingu Kogo , regent( 201-269 )