Three Ancient Springs
{{Short description|Group of hot springs in Japan}}
The Three Ancient Springs (日本三古湯, Nihon San Kotō) are a group of ancient onsen in Japan.
According to the Nihon Shoki and Fudoki, both from the eighth century, they are:
- Dōgo Onsen, Ehime Prefecture
- Arima Onsen, Hyōgo Prefecture
- Nanki-Shirahama Onsen, Wakayama Prefecture
The tenth century Engishiki gives a slightly different list:
- Dōgo Onsen, Ehime Prefecture
- Arima Onsen, Hyōgo Prefecture
- Iwaki Yumoto Onsen, Fukushima Prefecture