355

Centuries:	3rd century · 4th century · 5th century
Decades:	320s 330s 340s 350s 360s 370s 380s
Years:	352 353 354 355 356 357 358

355 by topic
Politics
State leaders – Sovereign states
Birth and death categories
Births – Deaths
Establishment and disestablishment categories
Establishments – Disestablishments

Events

1 January – Arbitio and Lollianus Mavortius begin their term as Roman consuls.
August 11—Claudius Silvanus, accused of treason, proclaims himself Roman Emperor. After 28 days, Ursicinus arrives from Rome and has Silvanus murdered.
November 6—In Mediolanum, Roman Emperor Constantius II raises his cousin Julian to the rank of Caesar of the West.
The Lentienses are fined by the Roman commander Arbetio under Emperor Constantius II for several riots against the Roman Empire.
The Franks besiege Cologne for ten months.

For refusing to sign the condemnation of Athanasius of Alexandria, Pope Liberius is forcedly relegated to Beroea in Thrace. Felix II becomes bishop of Rome.