 Odo the Blindwatcher | Humanoid | — |
 Off-Duty Pack Mule | Beast | — |
 Officer Areyn | Humanoid | — |
 Officer Brady | — | Stormwind City |
| Officer Jaxon | — | Stormwind City |
| Officer Pomeroy | — | Stormwind City |
| Oglethorpe ObnoticusMaster Gnome Engineer | Humanoid | — |
 Oil Slime | Unspecified | — |
| Ol' Beasley | Humanoid | — |
| Ol' Emma | — | — |
| Ol' Sandy | Humanoid | — |
| Old Man HemingFisherman | Humanoid | — |
| Old Murk-Eye | — | — |
| Old Serra'kis | Beast | — |
| Old Town Thug | Humanoid | — |
| Oliver | — | — |
| Olivia Burnside | — | Stormwind City |
| Olmin BurningbeardHunter Trainer | Humanoid | — |
| Olthran CraghelmHeavy Armor Merchant | Humanoid | — |
| Onu | — | — |
| Or'Kalar | Humanoid | — |
| Orange Tabby | — | — |
| Orendil Broadleaf | Humanoid | — |
| Orenthil Whisperwind | Humanoid | — |
| Orgrimmar Grunt | Humanoid | — |
 Ormer Ironbraid | Humanoid | — |
| Ormin Pelford | Humanoid | — |
| Ormyr FlinteyeRogue Trainer | Humanoid | — |
| Ornery Plainstrider | Beast | — |
| Orphan Matron Aria | — | — |
| Orphan Matron Nightingale | Humanoid | — |
| Orton Bennet | — | — |
 Osborne the Night ManRogue Trainer | Humanoid | — |
 Osric StrangHeavy Armor Merchant | Humanoid | — |
| OttWeaponsmith | Humanoid | — |
| Outfitter EricSpeciality Tailoring Supplies | Humanoid | — |
 Overwatch Mark IProtector | Mechanical | — |
| Owatanka | Beast | — |
 Owen VaughnReagent Vendor | Humanoid | — |
 Pack Mule | Beast | Redridge Mountains |
| Paige | — | — |
| Paige Chaddis | — | — |
 Palomino | Beast | Elwynn Forest |
 Pancakes | Critter | — |
 Panther | Beast | — |
| Pat | — | Stormwind City |
| Patricia Egan | — | Alterac Mountains |
 Paymaster AlsteinBanker | Humanoid | Alterac Mountains |
| Paymaster Amadi | — | — |
| Paymaster Chang | — | — |
| Pella BrassbrushBarber | Humanoid | — |
| Pelturas Whitemoon | — | — |
 PennyStable Master | Humanoid | Redridge Mountains |
| Peria LamenurPet Trainer | Humanoid | — |
| Pesterhide Hyena | Beast | — |
 Pherry LefteeDarkspear Islands Battlemaster | Humanoid | — |
| Phin Odelic | — | — |
| Pilot Bellowfiz | Humanoid | — |
| Pilot Hammerfoot | Humanoid | — |
| Pilot Stonegear | Humanoid | — |
| Pinto | — | — |
 Pinto | Beast | — |
| Pinto | — | — |
| Pippin | — | — |
| PithwickBag Vendor | Humanoid | — |
| Pix XizzixUndermine Trader | Humanoid | — |
| Plague Ghoul | — | — |
| Plague Spreader | — | Duskwood |
| Plagued Cockroach | Non-combat Pet | — |
 Plains Creeper | Beast | Arathi Highlands |
 Plunder | Elemental | — |
| Poison Cleansing Totem | Totem | — |
| Pollero Rene | — | — |
| Poranna SnowbraidTailoring Supplies | Humanoid | — |
| Porcine Entourage | — | — |
| Porthannius | Humanoid | — |
| Potato | — | — |
| Prairie Chicken | — | — |
| Prairie Dog | Critter | — |
| Prairie Dog | — | — |
| Prairie Wolf Pup | Non-combat Pet | — |
| Prate Cloudseer | Humanoid | — |
| Pridewing Consort | Beast | — |
| Pridewing Skyhunter | Beast | — |
| Pridewing Soarer | Beast | — |
| Pridewing Wyvern | Beast | — |
| Priestess A'moora | Humanoid | — |
| Priestess AlatheaPriest Trainer | Humanoid | — |
| Priestess Anetta | — | — |
 Priestess JosettaPriest Trainer | Humanoid | — |
| Priestess Tyriona | Humanoid | — |
| Princess | — | — |
| Princess | Non-combat Pet | — |
| Princess Nana | — | — |
| Privateer Bloads | Humanoid | — |
| Privateer Groy | Humanoid | — |
 Prospector GehnExplorers' League | Humanoid | — |
| Prospector RemtravelExplorers' League | Humanoid | — |
| Prospector Stonehewer | Humanoid | — |
 Prospector Stormpike | Humanoid | — |
