309

For the car known as the 309, see .

Roman Empire

 * The provinces revolt from the control of, acknowledging  as their Emperor.
 * The construction of a stone bridge across the near  is completed.

Asia

 * becomes king of.

Religion

 * is banished from, as is his successor later that year.
 * — succeeds  as the 31st.

Births

 * , an ecclesiastical writer of (approximate)

Deaths

 * (possible date — also )
 * (possible date — also )