Southern Yatsugatake Volcanic Group (南八ヶ岳, Minami-Yatsugatake), also known as just Yatsugatake is a volcanic group of inactive volcanoes located on the border of Nagano Prefecture and Yamanashi Prefecture on Honshū in Japan.

The southern group is defined as the mountains south of the Natsuzawa Pass.

The mountains of the Northern Yatsugatake Volcanic Group are gentler and lower.

Mount Tateshina is also part of the Northern Yatsugatake mountains, but is listed separately.

[2] The following major peaks make up part of the Southern Yatsugatake Volcanic Group and are listed by height:[2][5] From the south, to Natuzawa Pass, beyond which the Northern Yatsugatake Mountains begin, the peaks are: From Natsuzawa Pass, it is possible to descend to Sakuradaira, via O-ren Hut and Natsuzawa Kosen, or directly to Honzawa Onsen, or continue through the Northern Yatsugatake Mountains.