The following NPCs can be found in the Undercity.
Questgivers
Horde
- File:IconSmall Banshee Small.gif Aelthalyste <Priest Trainer>
- Apolos <Hunter Trainer>
- Armand Cromwell <Fishing Trainer>
- Champion Cyssa Dawnrose <Paladin Trainer>
- Christoph Walker <Warrior Trainer>
- Eunice Burch <Cooking Trainer>
- Graham Van Talen
- Gregory Charles <Rogue Trainer>
- Gordon Wendham <Weapons Merchant>
- Innkeeper Norman <Innkeeper>
- Junior Inspector (Love is in the Air)
- Kaal Soulreaper <Warlock Trainer>
- File:IconSmall Banshee Small.gif Kaelystia Hatebringer <Mage Trainer>
- Kwee Q. Peddlefeet <Crown Chemical Co.> (Love is in the Air)
- File:IconSmall Sylvanas Small.gif Lady Sylvanas Windrunner <Banshee Queen>
- Lunar Festival Harbinger (Lunar Festival)
- Lunar Festival Herald (Lunar Festival)
- Michael Garrett <Bat Handler>
- Nardstrum Copperpinch <Smokywood Pastures> (Feast of Winter Veil)
- Public Relations Agent <Crown Chemical Co.> (Love is in the Air)
- Quest:A Cloudlet of Classy Cologne (Love is in the Air Daily)
- Quest:Bonbon Blitz (Love is in the Air Daily)
- File:IconSmall Banshee Small.gif Sharlindra
- Warchief's Command Board
- Quest:Warchief's Command: Silverpine Forest!
- Quest:Warchief's Command: Hillsbrad Foothills!
- Quest:Warchief's Command: Arathi Highlands!
- Quest:Warchief's Command: Northern Stranglethorn Vale!
- Quest:Warchief's Command: The Cape of Stranglethorn!
- Quest:Warchief's Command: The Hinterlands!
- Quest:Warchief's Command: Western Plaguelands!
- Quest:Warchief's Command: Eastern Plaguelands!
- Quest:Warchief's Command: Badlands!
- Quest:Warchief's Command: Searing Gorge!
- Quest:Warchief's Command: Burning Steppes!
- Quest:Warchief's Command: Swamp of Sorrows!
- Quest:Warchief's Command: Blasted Lands!
- Quest:Warchief's Command: Outland!
- Quest:Warchief's Command: Northrend!
- Quest:Warchief's Command: Mount Hyjal!
- Quest:Warchief's Command: Vashj'ir!
- Quest:Warchief's Command: Deepholm!
- Quest:Warchief's Command: Twilight Highlands!
- Quest:Warchief's Command: Uldum!
- Quest:The Zandalari Menace
- Quest:Guardians of Hyjal: Call of the Ancients
- Quest:Guardians of Hyjal: Firelands Invasion!
Neutral
Class Trainers
Horde
- File:IconSmall Banshee Small.gif Aelthalyste <Priest Trainer>
- Father Lazarus <Priest Trainer>
- Father Lankester <Priest Trainer>
- Father Lazarus <Priest Trainer>
- Champion Cyssa Dawnrose <Paladin Trainer>
- Christoph Walker <Warrior Trainer>
- Angela Curthas <Warrior Trainer>
- Baltus Fowler <Warrior Trainer>
- Angela Curthas <Warrior Trainer>
- Gregory Charles <Rogue Trainer>
- Miles Dexter <Rogue Trainer>
- Carolyn Ward <Rogue Trainer>
- Miles Dexter <Rogue Trainer>
- Kaal Soulreaper <Warlock Trainer>
- Luther Pickman <Warlock Trainer>
- Richard Kerwin <Warlock Trainer>
- Martha Strain <Demon Trainer>
- Richard Kerwin <Warlock Trainer>
- Luther Pickman <Warlock Trainer>
- File:IconSmall Banshee Small.gif Kaelystia Hatebringer <Mage Trainer>
- Derek the Undying <Mage Trainer>
- Pierce Shackleton <Mage Trainer>
- Anastasia Hartwell <Mage Trainer>
- Lexington Mortaim <Portal Trainer>
- Pierce Shackleton <Mage Trainer>
- Derek the Undying <Mage Trainer>
- Mahala Cloudsong <Shaman Trainer>
- Mala Skywatcher <Druid Trainer>
- Nathanos Blightcaller <Hunter Trainer>
- Apolos <Hunter Trainer>
Profession (Tradeskill) Trainers
Horde
- Adam Hossack <Archaeology Trainer>
- Armand Cromwell <Fishing Trainer>
- Arthur Moore <Leatherworking Trainer>
- Brom Killian <Mining Trainer>
- Doctor Herbert Halsey <Alchemy Trainer>
- Eunice Burch <Cooking Trainer>
- Franklin Lloyd <Engineering Trainer>
- James Van Brunt <Blacksmithing Trainer>
- Josef Gregorian <Tailoring Trainer>
- Josephine Lister <Tailoring Trainer>
- Killian Hagey <Skinning Trainer>
- Lavinia Crowe <Enchanting Trainer>
- Margaux Parchley <Inscripton Trainer>
- Martha Alliestar <Herbalism Trainer>
- Mary Edras <First Aid Trainer>
- Neller Fayne <Jewelcrafting Trainer>
Merchants
Horde
- Abigail Sawyer <Bow Merchant>
- Alessandro Luca <Blue Moon Odds and Ends>
- File:IconSmall Zombie Small.gif Algernon <Alchemy Supplies>
- Benijah Fenner <Weapon Merchant>
- Captain Donald Adams <Undercity Quartermaster>
- Charles Seaton <Blade Merchant>
- Daniel Bartlett <General Trade Supplier>
- Eleanor Rusk <General Goods Vendor>
- Elizabeth Van Talen <Engineering Supplier>
- Ezekiel Graves <Poison Vendor>
- Felicia Doan <General Trade Goods Vendor>
- Francis Eliot <Weapon Merchant>
- Geoffrey Hartwell <Weapon Merchant>
- Gillian Moore <Leather Armor Merchant>
- Gordon Wendham <Weapons Merchant>
- Hannah Akeley <Reagent Supplier>
- Ickabod Pimlen <Inscription Supplies>
- Jaycrue Copperpinch <Smokywood Pastures> (Feast of Winter Veil)
- Jeremiah Payson <Cockroach Vendor>
- Jonathan Chambers <Bag Vendor>
- Joseph Moore <Leatherworking Supplies>
- Katrina Alliestar <Herbalism Supplier>
- Kim Horn <Guild Vendor>
- Lauren Newcomb <Light Armor Merchant>
- Lizbeth Cromwell <Fishing Supplier>
- Louis Warren <Weapons Merchant>
- Lovely Merchant <Crown Chemical Co.> (Love is in the Air)
- Lucille Castleton <Robe Vendor>
- Lunar Festival Vendor (Lunar Festival)
- Merill Pleasance <Tabard Vendor>
- Millie Gregorian <Tailoring Supplies>
- Mirelle Tremayne <Heavy Armor Merchant>
- Morley Bates <Fungus Vendor>
- Nardstrum Copperpinch <Smokywood Pastures> (Feast of Winter Veil)
- Nathaniel Steenwick <Thrown Weapons Merchant>
- Nicholas Atwood <Gun Merchant>
- Ronald Burch <Cooking Supplier>
- Salazar Bloch <Book Dealer>
- Samuel Van Brunt <Blacksmithing Supplier>
- Sara Lanner <Jewelcrafting Supplies>
- Sarah Killian <Mining Supplier>
- Sheldon Von Croy <Cloth Armor Merchant>
- Sydney Upton <Staff Merchant>
- Tawny Grisette <Mushroom Vendor>
- Thaddeus Webb <Enchanting Supplies>
- Thomas Mordan <Reagent Vendor>
- Timothy Weldon <Heavy Armor Merchant>
- Walter Ellingson <Heavy Armor Merchant>
- Zane Bradford <Wand Vendor>
Neutral
- Chapman <Day of the Dead Vendor> (Day of the Dead)
Various Services
Horde
- Anya Maulray <Stable Master>
- Archmage Pratt <Arcane Reforger>
- Auctioneer Cain - (Auctioneer)
- Auctioneer Epitwee - (Auctioneer)
- Auctioneer Leeka - (Auctioneer)
- Auctioneer Naxxremis - (Auctioneer)
- Auctioneer Rhyker - (Auctioneer)
- Auctioneer Stockton - (Auctioneer)
- Auctioneer Tricket - (Auctioneer)
- Auctioneer Yarly - (Auctioneer)
- Christopher Drakul <Guild Master>
- Deathstalker Fane <Battlemaster>
- Defilers Envoy - (Call to Arms: Arathi Basin)
- Dragonmaw Envoy - (Call to Arms: Twin Peaks)
- Edward Cairn <Elder> ( [Tyrael's Hilt] reclamation)
- Edward Remington <Guild Tabard Designer>
- Envoy Ragda <Twin Peaks Battlemaster> - (Call to Arms: Twin Peaks)
- Eye of the Storm Envoy - (Call to Arms: Eye of the Storm)
- Frostwolf Envoy - (Call to Arms: Alterac Valley)
- Gilnean Envoy - (Call to Arms: The Battle for Gilneas)
- Grizzle Halfmane <Alterac Valley Battlemaster> - (Call to Arms: Alterac Valley)
- Hans Crump <The Battle for Gilneas Battlemaster> - (Call to Arms: The Battle for Gilneas)
- Innkeeper Norman <Innkeeper>
- Isle of Conquest Envoy - (Call to Arms: Isle of Conquest)
- Kor'kron Overseer - (Directions)
- Kraxx <Zeppelin Engineer>
- Kurden Bloodclaw <Warsong Gulch Battlemaster> - (Call to Arms: Warsong Gulch)
- Lyrlia Blackshield <Eye of the Storm Battlemaster> - (Call to Arms: Eye of the Storm)
- Marog <Isle of Conquest Battlemaster> - (Call to Arms: Isle of Conquest)
- Michael Garrett <Bat Handler>
- Misery <Battlemaster>
- Mortimer Montague <Banker>
- Naznik Sureshave <Barber>
- File:IconSmall Wraith Small.gif Ophelia Montague <Banker>
- Randolph Montague <Banker>
- Sir Malory Wheeler <Arathi Basin Battlemaster> - (Call to Arms: Arathi Basin)
- Sarah Forthright <Strand of the Ancients Battlemaster> - (Call to Arms: Strand of the Ancients)
- Strand of the Ancients Envoy - (Call to Arms: Strand of the Ancients)
- File:IconSmall Abomination Small.gif Undercity Guardian - (Directions)
- Walter Soref <Locksmith>
- Warsong Envoy - (Call to Arms: Warsong Gulch)
- William Montague <Banker>
Other Notable NPCs
Horde
- Adrian Bartlett
- Aleric Hawkins <The Deathstalkers>
- Alyssa Blaye
- Ambassador Sunsorrow
- Andrew Brownell
- Andrew Hartwell
- Andron Gant
- Apothecary Katrina <Royal Apothecary Society>
- Apothecary Keever <Royal Apothecary Society>
- Apothecary Lycanus <Royal Apothecary Society>
- Apothecary Vallia <Royal Apothecary Society>
- Apothecary Zinge <Royal Apothecary Society>
- Basil Frye <Apprentice Blacksmith>
- Bethor Iceshard
- File:IconSmall Zombie Small.gif Boyle
- Bragor Bloodfist <Kor'kron Captain>
- Brother Malach
- Carendin Halgar
- Cedric Stumpel
- Chemist Fuely
- Chloe Curthas
- Dan Golthas <Apprentice Leatherworker>
- Dark Ranger Anya
- Dark Ranger Clea
- Dark Ranger Cyndia
- Davitt Hickson
- Doctor Marsh <Apprentice Alchemist>
- Doctor Martin Felben <Apprentice Alchemist>
- Edrick Killian
- Eldin Partridge
- Edward
- Estelle Gendry
- Ganoosh
- Gerard Abernathy
- Godrick Farsan
- Gothard Winslow
- Graham Van Talen <Apprentice Engineer>
- Harbinger Balthazad
- Helena Atwood
- Hepzibah Sedgewick
- Jezelle Pruitt
- Joanna Whitehall
- Jorah Annison
- Keeper Bel'dugur
- Leona Tharpe
- Lucian Fenner
- Lysta Bancroft
- Malcomb Wynn <Apprentice Enchanter>
- Marla Fowler
- Master Apothecary Faranell <Royal Apothecary Society>
- Mattie Alred
- Mennet Carkad
- Overseer Kraggosh
- Parqual Fintallas
- Patrick Garrett
- Raleigh Andrean <Ex-Chef>
- Reginald Grimsford
- Rhiannon Davis <Apprentice Tailor>
- Richard Van Brunt
- Riley Walker
- Robert Gossom
- Royal Overseer Bauhaus <Undercity Census>
- Samantha Shackleton
- Selina Pickman
- Sergeant Houser <Sergeant>
- Sergeant Rutger <Sergeant>
- Silas Zimmer
- Susan Tillinghast
- Theodore Griffs
- Theresa <Gerard's Mindslave>
- Thersa Windsong
- Travist Bosk
- Tyler
- Velora Nitely
- Victor Bartholomew
- Victor Ward <Apprentice Tailor>
- Winifred Kervin