|Centuries:||1st century BC – 1st century – 2nd century|
|Decades:||0s BC 0s 10s – 20s – 30s 40s 50s|
|Years:||24 25 26 – 27 – 28 29 30|
Year 27 (XXVII) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Piso and Frugi (or, less frequently, year 780 Ab urbe condita). The denomination 27 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
- Lucius Calpurnius Piso and Marcus Licinius Crassus Frugi become Roman consuls.
- Fire in Rome.
- A poorly built amphitheatre in Fidenae collapses, killing 20,000 of the 50,000 spectators.
- Apricots are brought to Rome from Asia.
- An Arc of Triumph is erected in Rimini, in honor of Augustus.
- Agrippa II of Judea
- Petronius, Roman writer (d. 66 AD)
- Wang Chong (Wang-Tch'oung), Chinese philosopher (d. 97)