| Holiday Name: | Saiō Matsuri |
| Type: | shinto |
| Observedby: | Meiwa, Mie Prefecture, Japan |
| Longtype: | Cultural |
| Significance: | Celebrates the town's history of once being an Imperial residence |
| Begins: | Saturday |
| Ends: | Sunday |
| Scheduling: | nth weekday of the month |
| Duration: | 1 day |
| Frequency: | annual |
| Week Ordinal: | first |
| Weekday: | Saturday |
| Month: | June |
The Saiō Matsuri (斎王まつり) is a 2-day festival held on the first weekend of June in the town of Meiwa, Mie Prefecture in Japan. The Saiō Matsuri celebrates the town's history of once being an Imperial residence. The festival re-enacts the march of the Saiō and her entourage to the nearby Ise Shrine. The festival consists of over 100 people dressed in spectacular Heian period costume, marching down a section of the Ise Kada, the old Ise Pilgrimage road, toward the . 2006 saw the celebration of the 24th annual Saiō Matsuri.