| Name | CR | Type | Environment |
| Eagle | 1/2 | animal | temperate mountains |
| Eagle, Giant Eagle | 3 | magical beast | temperate mountains |
| Eaisge | 1 | undead (aquatic) | any swamp or water |
| Ebon Acolytus | 7 | construct | any |
| Echeneis | 1 | magical beast (aquatic) | warm or temperate water |
| Echohusk, Bugbear Echohusk | 1 | undead | any |
| Ecorche | 16 | undead | any land |
| Ectoplasmic Creature, Ectoplasmic Human | 1/2 | undead | any |
| Edimmu | 3 | undead (incorporeal) | any desert |
| Eel, Electric Eel | 2 | animal | warm fresh water |
| Eel, Giant Moray Eel | 5 | animal (aquatic) | warm oceans |
| Eel, Sand | 5 | animal | desert |
| Egophage | 10 | aberration | any underground |
| Egregore | 10 | aberration | any |
| Eidolon, Unfettered | 8 | outsider (extraplanar) | any |
| Einherji | 10 | outsider (extraplanar) | any |
| Ekekeh | 4 | fey (aquatic) | any oceans (First World) |
| Elder Thing | 5 | aberration (aquatic) | any |
| Elder Wyrm | 24 | dragon | any |
| Elemental (Aether), Elder Aether Elemental | 11 | outsider (aether, elemental, extraplanar) | any (Ethereal Plane) |
| Elemental (Aether), Greater Aether Elemental | 9 | outsider (aether, elemental, extraplanar) | any (Ethereal Plane) |
| Elemental (Aether), Huge Aether Elemental | 7 | outsider (aether, elemental, extraplanar) | any (Ethereal Plane) |
| Elemental (Aether), Large Aether Elemental | 5 | outsider (aether, elemental, extraplanar) | any (Ethereal Plane) |
| Elemental (Aether), Medium Aether Elemental | 3 | outsider (aether, elemental, extraplanar) | any (Ethereal Plane) |
| Elemental (Aether), Small Aether Elemental | 1 | outsider (aether, elemental, extraplanar) | any (Ethereal Plane) |
| Elemental (Air), Elder Air Elemental | 11 | outsider (air, elemental, extraplanar) | Plane of Air |
| Elemental (Air), Greater Air Elemental | 9 | outsider (air, elemental, extraplanar) | Plane of Air |
| Elemental (Air), Huge Air Elemental | 7 | outsider (air, elemental, extraplanar) | Plane of Air |
| Elemental (Air), Large Air Elemental | 5 | outsider (air, elemental, extraplanar) | Plane of Air |
| Elemental (Air), Medium Air Elemental | 3 | outsider (air, elemental, extraplanar) | Plane of Air |
| Elemental (Air), Small Air Elemental | 1 | outsider (air, elemental, extraplanar) | Plane of Air |
| Elemental (Earth), Elder Earth Elemental | 11 | outsider (earth, elemental, extraplanar) | any (Plane of Earth) |
| Elemental (Earth), Greater Earth Elemental | 9 | outsider (earth, elemental, extraplanar) | any (Plane of Earth) |
| Elemental (Earth), Huge Earth Elemental | 7 | outsider (earth, elemental, extraplanar) | any (Plane of Earth) |
| Elemental (Earth), Large Earth Elemental | 5 | outsider (earth, elemental, extraplanar) | any (Plane of Earth) |
| Elemental (Earth), Medium Earth Elemental | 3 | outsider (earth, elemental, extraplanar) | any (Plane of Earth) |
| Elemental (Earth), Small Earth Elemental | 1 | outsider (earth, elemental, extraplanar) | any (Plane of Earth) |
| Elemental (Fire), Elder Fire Elemental | 11 | outsider (elemental, extraplanar, fire) | any (Plane of Fire) |
| Elemental (Fire), Greater Fire Elemental | 9 | outsider (elemental, extraplanar, fire) | any (Plane of Fire) |
| Elemental (Fire), Huge Fire Elemental | 7 | outsider (elemental, extraplanar, fire) | any (Plane of Fire) |
| Elemental (Fire), Large Fire Elemental | 5 | outsider (elemental, extraplanar, fire) | any (Plane of Fire) |
| Elemental (Fire), Medium Fire Elemental | 3 | outsider (elemental, extraplanar, fire) | any (Plane of Fire) |
| Elemental (Fire), Small Fire Elemental | 1 | outsider (elemental, extraplanar, fire) | any (Plane of Fire) |
| Elemental (Ice), Elder Ice Elemental | 11 | outsider (air, cold, elemental, extraplanar, water)
| any land or water (Plane of Water) |
| Elemental (Ice), Greater Ice Elemental | 9 | outsider (air, cold, elemental, extraplanar, water)
| any land or water (Plane of Water) |
| Elemental (Ice), Huge Ice Elemental | 7 | outsider (air, cold, elemental, extraplanar, water)
| any land or water (Plane of Water) |
| Elemental (Ice), Large Ice Elemental | 5 | outsider (air, cold, elemental, extraplanar, water)
| any land or water (Plane of Water) |
| Elemental (Ice), Medium Ice Elemental | 3 | outsider (air, cold, elemental, extraplanar, water)
| any land or water (Plane of Water) |
| Elemental (Ice), Small Ice Elemental | 1 | outsider (air, cold, elemental, extraplanar, water)
| any land or water (Plane of Water) |
| Elemental (Lightning), Elder Lightning Elemental | 11 | outsider (air, elemental, extraplanar) | any (Plane of Air) |
| Elemental (Lightning), Greater Lightning Elemental | 9 | outsider (air, elemental, extraplanar) | any (Plane of Air) |
| Elemental (Lightning), Huge Lightning Elemental | 7 | outsider (air, elemental, extraplanar) | any (Plane of Air) |
| Elemental (Lightning), Large Lightning Elemental | 5 | outsider (air, elemental, extraplanar) | any (Plane of Air) |
| Elemental (Lightning), Medium Lightning Elemental | 3 | outsider (air, elemental, extraplanar) | any (Plane of Air) |
| Elemental (Lightning), Small Lightning Elemental | 1 | outsider (air, elemental, extraplanar) | any (Plane of Air) |
| Elemental (Magma), Elder Magma Elemental | 11 | outsider (earth, elemental, extraplanar, fire) | any (Plane of Fire) |
| Elemental (Magma), Greater Magma Elemental | 9 | outsider (earth, elemental, extraplanar, fire) | any (Plane of Fire) |
| Elemental (Magma), Huge Magma Elemental | 7 | outsider (earth, elemental, extraplanar, fire) | any (Plane of Fire) |
| Elemental (Magma), Large Magma Elemental | 5 | outsider (earth, elemental, extraplanar, fire) | any (Plane of Fire) |
| Elemental (Magma), Medium Magma Elemental | 3 | outsider (earth, elemental, extraplanar, fire) | any (Plane of Fire) |
| Elemental (Magma), Small Magma Elemental | 1 | outsider (earth, elemental, extraplanar, fire) | any (Plane of Fire) |
| Elemental (Mud), Elder Mud Elemental | 11 | outsider (earth, elemental, extraplanar, water) | any land or water (Plane of Earth) |
| Elemental (Mud), Greater Mud Elemental | 9 | outsider (earth, elemental, extraplanar, water) | any land or water (Plane of Earth) |
| Elemental (Mud), Huge Mud Elemental | 7 | outsider (earth, elemental, extraplanar, water) | any land or water (Plane of Earth) |
| Elemental (Mud), Large Mud Elemental | 5 | outsider (earth, elemental, extraplanar, water) | any land or water (Plane of Earth) |
| Elemental (Mud), Medium Mud Elemental | 3 | outsider (earth, elemental, extraplanar, water) | any land or water (Plane of Earth) |
| Elemental (Mud), Small Mud Elemental | 1 | outsider (earth, elemental, extraplanar, water) | any land or water (Plane of Earth) |
| Elemental (Water), Elder Water Elemental | 11 | outsider (elemental, extraplanar, water) | any (Plane of Water) |
| Elemental (Water), Greater Water Elemental | 9 | outsider (elemental, extraplanar, water) | any (Plane of Water) |
| Elemental (Water), Huge Water Elemental | 7 | outsider (elemental, extraplanar, water) | any (Plane of Water) |
| Elemental (Water), Large Water Elemental | 5 | outsider (elemental, extraplanar, water) | any (Plane of Water) |
| Elemental (Water), Medium Water Elemental | 3 | outsider (elemental, extraplanar, water) | any (Plane of Water) |
| Elemental (Water), Small Water Elemental | 1 | outsider (elemental, extraplanar, water) | any (Plane of Water) |
| Elemental Lord, Ymeri | 28 | outsider (evil, extraplanar, fire) | any (Plane of Fire) |
| Element-Infused Creature, Earth-Infused Giant Porcupine | 3 | outsider (earth, native) | — |
| Elephant | 7 | animal | warm plains |
| Elephant, Mastodon | 9 | animal | cold or temperate forests and plains |
| Embalming Bear | 7 | construct | any |
| Emerald Automaton | 4 | construct | any |
| Emkrah | 9 | aberration | any |
| Emotion Ooze | 6 | ooze | any |
| Emperor Stag | 3 | animal | temperate hills or forests |
| Empusa | 13 | outsider (chaotic, extraplanar, shapechanger) | any (Elysium) |
| Empyreal Lord, Arshea | 29 | outsider (angel, extraplanar, good) | any (Nirvana) |
| Empyreal Lord, Ashava | 28 | outsider (azata, chaotic, extraplanar, good) | any (Elysium) |
| Empyreal Lord, Black Butterfly | 28 | outsider (azata, chaotic, extraplanar, good) | any (Elysium) |
| Empyreal Lord, Cernunnos | 30 | outsider (azata, chaotic, extraplanar, good) | any forest or plain (Elysium) |
| Empyreal Lord, Korada | 26 | outsider (agathion, extraplanar, good) | any forests or mountains (Nirvana) |
| Empyreal Lord, Ragathiel | 26 | outsider (angel, extraplanar, good, lawful) | any (Heaven) |
| Empyreal Lord, Vildeis | 28 | outsider (angel, extraplanar, good, lawful) | any (Heaven) |
| Encantado | 8 | fey (shapechanger) | warm rivers |
| Enchanter Heron | 3 | animal | temperate rivers and coasts |
| Energized Ice Golem | 7 | construct (cold) | any |
| Enlightened Construct Clockwork Soldier | 8 | construct (augmented, clockwork) | any |
| Entothrope, Weremantis (Human Form) | 4 | humanoid (human, shapechanger) | any land |
| Entothrope, Weremantis (Hybrid Form) | 4 | humanoid (human, shapechanger) | any land |
| Entothrope, Werespider (Human Form) | 2 | humanoid (human, shapechanger) | any |
| Entothrope, Werespider (Hybrid Form) | 2 | humanoid (human, shapechanger) | any |
| Entothrope, Werewasp (Human Form) | 5 | humanoid (elf, shapechanger) | any land |
| Entothrope, Werewasp (Hybrid Form) | 5 | humanoid (elf, shapechanger) | any land |
| Ephemeral Echo | 7 | undead (incorporeal) | any |
| Ercinee | 4 | magical beast | temperate forests |
| Erlking | 18 | fey | temperate forests |
| Escorite | 8 | fey | any (First World) |
| Estuarine Worm, Estuarine Worm (Ahket Form) | 10 | magical beast (aquatic) | warm marshes and rivers |
| Estuarine Worm, Estuarine Worm (Shemu Form) | 10 | magical beast (aquatic) | warm marshes and rivers |
| Etheroot | 8 | plant (extraplanar) | any (Ethereal Plane) |
| Etiainen | 1 | outsider (incorporeal, native) | any urban |
| Ettercap | 3 | aberration | temperate forests |
| Ettin | 6 | humanoid (giant) | cold hills |
| Euryale | 20 | monstrous humanoid | any |
| Eurypterid, Bluetip Eurypterid | 5 | vermin (aquatic) | temperate or warm ocean |
| Eurypterid, Common Eurypterid | 1 | vermin (aquatic) | temperate or warm ocean |
| Eurypterid, Common Eurypterid | 1 | vermin (aquatic) | temperate or warm oceans |
| Eurypterid, Ochre Eurypterid | 1/3 | vermin (aquatic) | warm ocean |
| Eurypterid, Spiny Eurypterid | 9 | vermin (aquatic) | warm ocean |
| Eurypterid, Spiny Eurypterid | 9 | vermin (aquatic) | warm oceans |
| Eurypterid, Spitting Eurypterid | 12 | vermin (aquatic) | temperate or warm ocean |
| Exiled Shade | 6 | undead (incorporeal) | any |
| Exoskeleton, Exoskeleton Giant Cockroach | 1/2 | undead | — |
| Exoskeleton, Exoskeleton Giant Stag Beetle | 4 | undead | — |
| Exoskeleton, Exoskeleton Titan Centipede | 8 | undead | — |
| Ez-azael | 12 | outsider (good, lawful, native) | any (Material Plane) |