| Creature | Terrain | Climate | Campaign | Reference |
|---|---|---|---|---|
| Ape, Snow | Mountains | Arctic | Any | DRC 157 |
| Asperii | Mountains | Any | Forgotten Realms | FR1MC |
| Asperii, Noble | Mountains | Any | Forgotten Realms | FR1MC |
| Baboon, Rock | Mountains | Temp/Trop | Any | DRC 158 |
| Bhaergala | Mountains | Any | Any | MM 241 |
| Bird Maiden | Mountains | Tropical | Any | MM 334 |
| Braxat | Mountains | Any | Dark Sun | MAIII 15 |
| Caterwaul | Mountains | Temperate | Any | FFMC |
| Centaur-Kin, Gnoat | Mountains | Temp/Trop | Any | MAII 28 |
| Creations, Guardian, Climbdog | Mountains | Tropical | Any | MAIII 70 |
| Creations, Guardian, Darkstrike | Mountains | Tropical | Any | MAIII 70 |
| Creations, Guardian, Protector | Mountains | Tropical | Any | MAIII 70 |
| Creations, Guardian, Shieldbug | Mountains | Tropical | Any | MAIII 70 |
| Creations, Guardian, Watcher | Mountains | Tropical | Any | MAIII 70 |
| Creations, Transport, Ber-ethern | Mountains | Tropical | Any | MAIII 71 |
| Creations, Transport, Dhev-sahr | Mountains | Tropical | Any | MAIII 71 |
| Creations, Transport, Gon-evauth | Mountains | Tropical | Any | MAIII 71 |
| Creations, Transport, Yihn-eflan | Mountains | Tropical | Any | MAIII 71 |
| Crystalmist | Mountains | Temp/SubTrop | Greyhawk | GHMC |
| Displacer Beast | Mountains | Temperate | Any | MM 56 |
| Dragon, Amethyst | Mountains | Temp/SubArc | Any | MM 70 |
| Dragon, Cerilian | Mountains | Any | Any | MAIII 26 |
| Dragon, Cloud | Mountains | Temp/Trop | Any | MM 81 |
| Dragon, Crystal | Mountains | Temp/SubArc | Any | MM 71 |
| Dragon, Electrum | Mountains | Any | Any | MAI |
| Dragon, Emerald | Mountains | Sub-Trop/Trop | Any | MM 72 |
| Dragon, Fang | Mountains | Any | Any | MAI |
| Dragon, Mercury | Mountains | Temp/SubTrop | Any | MM 83 |
| Dragon, Neutral, Pearl | Mountains | Any | Any | MAI |
| Dragon, Oriental, T'ien Lung (Celestial) | Mountains | Temp/Trop | Forgotten Realms | FR1MC |
| Dragon, Othlorx, Red | Mountains | Temp/Trop | Dragonlance | DLMC |
| Dragon, Othlorx, Silver | Mountains | Temp/Trop | Dragonlance | DLMC |
| Dragon, Othlorx, White | Mountains | Arctic | Dragonlance | DLMC |
| Dragon, Red | Mountains | Temp/Trop | Any | MM 68 |
| Dragon, Red (Krynn) | Mountains | Temp/Trop | Dragonlance | DLMC |
| Dragon, Silver | Mountains | Temp/Trop | Any | MM 79 |
| Dragon, Silver (Krynn) | Mountains | Temp/Trop | Dragonlance | DLMC |
| Dragon, White | Mountains | Arctic | Any | MM 69 |
| Dragon, White (Krynn) | Mountains | Arctic | Dragonlance | DLMC |
| Dragonet, Firedrake | Mountains | Temperate | Any | MM 90 |
| Dwarf, Mountain | Mountains | Sub-Arc/Trop | Any | MM 94 |
| Eagle, Giant | Mountains | Any | Any | MM 27 |
| Eagle, Wild | Mountains | Any | Any | MM 27 |
| Elemental, Wind Walker | Mountains | Tropical | Any | MAI |
| Elf, Winged (Avariel) | Mountains | Temp/SubTrop | Any | MAII 50 |
| Falcon, Fire | Mountains | Any | Any | FFMC |
| Gahonga | Mountains | Any | Any | LL 27 |
| Galeb Duhr | Mountains | Any | Any | MM 122 |
| Gargantua, Insectoid | Mountains | Temp/Trop | Any | MM 123 |
| Giant, Cerilian, Ice | Mountains | Arctic | Any | MAIII 51 |
| Giant, Cloud | Mountains | Any | Any | MM 132 |
| Giant, Mountain | Mountains | Any | Any | MM 143 |
| Giant, Mountain, Shaman | Mountains | Any | Any | MM 143 |
| Giant, Stone | Mountains | Temp/SubTrop | Any | MM 145 |
| Gith | Mountains | Any | Any | MM 151 |
| Gnome, Mad | Mountains | Any | Dragonlance | DLMC |
| Gnome, Tinker | Mountains | Any | Any | MM 159 |
| Golem, Snow | Mountains | Arctic | Ravenloft | RVIII 50 |
| Gorynych | Mountains | Temperate | Any | MAI |
| Griffon | Mountains | Temp/SubTrop | Any | MM 178 |
| Grimlock | Mountains | Any | Any | MM 179 |
| Grimlock, Leader | Mountains | Any | Any | MM 179 |
| Human, Barbarian, Frost | Mountains | Arctic | Kara-Tur | KTMC |
| Jack Frost | Mountains | Arctic | Ravenloft | RVIII 63 |
| Kala, Cave | Mountains | Arctic | Kara-Tur | KTMC |
| Kyrie | Mountains | Sub-Trop/Trop | Dragonlance | DLMC |
| Llama | Mountains | Any | Any | MAII 84 |
| Lycanthrope, Loup du Noir, Mountain | Mountains | Temperate | Ravenloft | RVIII 79 |
| Lycanthrope, Werepanther | Mountains | Tropical | Any | MAII 81 |
| Lycanthrope, Werepanther, Lord | Mountains | Tropical | Any | MAII 81 |
| Ooze, Lava | Mountains | Any | Any | DRC 188 |
| Orughi | Mountains | Sub-Trop/Trop | Dragonlance | DLMC |
| Pegataur | Mountains | Temperate | Any | MAIII 86 |
| Peryton | Mountains | Any | Any | MM 286 |
| Phaethon | Mountains | Any | Dragonlance | DLMC |
| Phaethon, Elder | Mountains | Any | Dragonlance | DLMC |
| Ram, Giant | Mountains | Temp/SubArc | Any | MAII 84 |
| Reggelid | Mountains | Any | Dark Sun | MAIII 88 |
| Roc | Mountains | Sub-Tropical | Any | MM 303 |
| Skyfish | Mountains | Temp/Trop | Dragonlance | DLMC |
| Sphinx, Draco- | Mountains | Any | Any | MAII 104 |
| Spirit, Ice, Orglash | Mountains | Arctic | Any | MAIII 98 |
| Spirit, Rock, Thomil | Mountains | Any | Any | MAIII 99 |
| Tembo | Mountains | Any | Dark Sun | MAIII 105 |
| Tengu, Crow | Mountains | Temp/Trop | Kara-Tur | KTMC |
| Tengu, Humanoid | Mountains | Temp/Trop | Kara-Tur | KTMC |
| Wang-Liang | Mountains | Temperate | Kara-Tur | KTMC |
| Wang-Liang, Elder Circle | Mountains | Temperate | Kara-Tur | KTMC |
| Wyvern | Mountains | Temperate | Any | MM 366 |
| Yak-Man (Yikaria) | Mountains | Any | Any | MAII 115 |
| Yeti | Mountains | Arctic | Any | MM 368 |
| Yeti-kin, Saqualaminoi | Mountains | Arctic | Dragonlance | DLMC |
| Yuki-on-na | Mountains | Arctic | Kara-Tur | KTMC |