 Lower Roshamuul | Roshamuul | 130–150 | Shock HeadFrazzlemawSilencer |
 Lower Spike | Kazordoon | 150 | Nightmare ScionDrillwormVulcongra+8 |
 Lycanthrope Grounds | Edron | 100–120 | WerefoxWerebadgerWereboar+7 |
 Mad Mage Room | Thais | 40 | Poison SpiderSkeletonScorpion+7 |
 Mad Mage Valley | Kazordoon | 8 | DeerSnakeBat+4 |
| Magician Quarter | Yalahar | 40–45 | — |
 Magician Quarter Academy of Magic | Yalahar | — | Dark ApprenticeDark MagicianMad Scientist+1 |
 Magician Quarter Efreet Territory | Yalahar | 50–60 | Green DjinnEfreetMerikh the Slaughterer |
 Magician Quarter Marid Territory | Yalahar | 50–60 | Blue DjinnMaridFahim The Wise |
 Magician Quarter Research Centre | Yalahar | 30 | Novice of the CultAcolyte of the CultAdept of the Cult+2 |
 Magician Quarter Residential Area | Yalahar | — | Butterfly (Red)CatRabbit+8 |
 Magician Quarter Restricted Area | Yalahar | — | GozzlerNecromancerEnlightened of the Cult+4 |
 Magician Tower | Kazordoon | 16–20 | War WolfGhoulDark Apprentice+2 |
 Mal'ouquah | Ankrahmun | 50–55 | ScorpionGargoyleStalker+4 |
 Malada | Liberty Bay | 60–70 | SeagullTarantulaQuara Constrictor Scout+8 |
 Mammoth Shearing Factory | Svargrond | 30–40 | WitchFrost GiantFrost Giantess+2 |
 Mawhawk's Lair | Roshamuul | 140–180 | FrazzlemawGuzzlemawMawhawk |
 Maze of Lost Souls | Carlin | 40–45 | RatSnakeSpider+36 |
 Medusa Cave | Liberty Bay | 120–150 | Serpent SpawnMedusa |
 Medusa Tower | Port Hope | 200 | GargoyleSlimeStone Golem+5 |
 Meriana | Liberty Bay | 10–13 | Azure FrogBatButterfly (Blue)+18 |
 Meriana Gargoyle Cave | Liberty Bay | 30–35 | TarantulaGargoyleStone Golem+2 |
 Middle Spike | Kazordoon | 70 | Clay GuardianEarth ElementalMutated Rat+4 |
 Minotaur Camp | Thais | 8 | MinotaurDeerBat |
 Minotaur Hell | Rookgaard | 6 | WolfOrcMinotaur+2 |
 Minotaurs Cult Cave | Thais | 50–65 | Minotaur Cult FollowerMinotaur Cult ZealotMinotaur Cult Prophet |
 Mintwallin | Thais | 27–35 | DogSnakeMinotaur+6 |
 Mirrored Nightmare | Kilmaresh | 600 | Many FacesDistorted PhantomMirror Image+5 |
 Misguided Camp | Thais | 150 | Misguided ThiefMisguided Bully |
 Mistrock | Yalahar | 30–35 | CyclopsCyclops DroneCyclops Smith+1 |
 Monster Graveyard | Edron | 600 | SulphiderSulphur SpouterNighthunter+2 |
 Mother of Scarabs Lair | Ankrahmun | 55–60 | LarvaMummyScarab+3 |
 Mount Sternum | Thais | 20 | Cave RatBatSpider+12 |
| Mount Sternum Dragon Cave | Thais | 28–40 | — |
| Mount Sternum Undead Cave | Thais | 13–15 | DeerBearSkeleton+20 |
 Mountain Tomb | Ankrahmun | 10–13 | SnakeCave RatHyaena+20 |
 Muggy Plains | Farmine | 60–100 | Death BlobMutated BatDragon+6 |
| Muglex Clan Camp | Newhaven | — | Muglex Clan FootmanMuglex Clan AssassinDeer |
 Murky Caverns | Ankrahmun | 200 | WerepantherFeral WerecrocodileWerecrocodile |
| Museum of Tibian Arts | Thais | 100 | Animated RotwormAnimated MummyAnimated Cyclops+9 |
 Mushroom Gardens | Kazordoon | 80 | Mutated RatWyvernWiggler+4 |
 Nargor | Liberty Bay | 35–45 | PigCrabSmuggler+10 |
 Nargor Undead Cave | Liberty Bay | 40 | GhoulPirate SkeletonTarantula+3 |
 Netherworld | Venore | 300–350 | Flimsy Lost SoulMean Lost SoulFreakish Lost Soul+3 |
 Nibelor | Svargrond | 15–20 | Chakoya TribewardenHuskyPenguin+3 |
 Nibelor Ice Cave | Svargrond | 40–60 | Ice GolemCrystal Spider |
 Nightmare Isles | Darama | 250 | SilencerRetching HorrorChoking Fear+1 |
 Nimmersatt's Breeding Ground | Zao | 400 | DragoliskMega DragonWardragon |
 Nomad Cave | Ankrahmun | 12–13 | RotwormScorpionNomad (Basic)+1 |
 Norcferatu Dungeons | Yalahar | 550 | Dworc ShadowstalkerGloom MawNorcferatu Heartless+3 |