- 火山口 huǒshānkǒu cratervolcanic crater
- 乃堆拉山口 Nǎiduīlā Shānkǒu Nathu LaNathu La (Himalayan pass on the Silk Road between Tibet and the northeastern Indian state of Sikkim)
- 山口洋 Shānkǒuyáng SingkawangSingkawang city (Kalimantan, Indonesia)
- 开伯尔山口 Kāibó'ěrshānkǒu Khyber PassKhyber Pass (mountain pass between Pakistan and Afghanistan)
- 山口县 Shānkǒuxiàn YamaguchiYamaguchi prefecture in southwest of Japan's main island Honshū
- 低平火山口 dīpínghuǒshānkǒu maar