# Butt Sumo Festival
_尻つみ祭り_

- **When:** Tue, Nov 10, 2026 (JST)
- **Where:** 音無神社境内 — 静岡県 伊東市 伊東市音無町1-12
- **Map:** https://www.google.com/maps/search/?api=1&query=34.9669,139.095886
- **Price:** price on the official site
- **Category:** Matsuri & Festivals
- **Official site:** https://itospa.com/event/detail_10023.html
- **On Tokyo Events:** https://eventstokyo.com/en/events/butt-sumo-festival

![](https://itospa.com/lsc/upfile/spot/0001/0023/10023_1_l.jpg)

Held annually on November 10 at Otonashi Shrine, this unique festival traces its origins to a legend about Minamoto no Yoritomo and Lady Yaehime, who are said to have had secret meetings at the shrine. Traditionally, participants would pinch their neighbor’s backside in the darkened shrine as a signal while passing sacred sake. Today, a lively butt sumo competition takes place to festival music, with contestants bumping each other playfully. The humorous matches delight the crowd, filling the venue with laughter. Why not join in this 'world-famous quirky festival' yourself?

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Source: Tokyo Events — https://eventstokyo.com/en/events/butt-sumo-festival