Festival of the Ages is a traditional Japanese festival (also called the matsuri) held on October 22 annually in Kyoto, Japan.

The Jidai Matsuri begins in early morning with the mikoshi (portable shrines) brought out of the Old Imperial Palace so that people may pay their respects. The mikoshi represent emperors Kanmu and Kōmei, respectively. The five-hour, two-kilometer costume procession begins in the afternoon, with approximately 2,000 performers dressed as samurai, military figures, and common people, from the earliest eras to the Meiji era These are followed by Japanese women who are dressed in elaborate jūnihitoe (十二単衣 juunihitoe). And, finally, the mikoshi are carried from the palace and are accompanied by a costumed military band that is playing the gagaku. The procession ends at the Heian Shrine.

Jidai-matsuri, or Festival of the Ages dates back to 1895. The festival was started to commemorate the 1,100th anniversary of transferring the capital to Kyoto. Around 2,500 people wearing clothes of the ages ranging from the 8th to the 19th century parade from the imperial palace to Heian-jingu shrine every year.