The following NPCs can be found in Swamp of Sorrows.

Questgivers

Alliance

•  Anchorite Avuun
  •  [37] Help Watcher Biggs
  •  [38] Mercy for the Cursed
•  Holaaru
  •  [43] Pool of Tears
•  Watcher Biggs
  •  [35] The Lost Caravan
  •  [37] Encroaching Wildlife
  •  [42] Driftwood
  •  [42] Deliver the Shipment

Horde

•  Bengor
  •  [55] The Swamp Talker
•  Cersei Dusksinger
  •  [38] Little Morsels
•  Dar
  •  [40] Lack of Surplus
  •  [44] Fresh Meat
•  Dispatch Commander Ruag
  •  [50] The Missing Orders
•  Fel'zerul
  •  [43] Pool of Tears (Elite)
  •  [44] The Atal'ai Exile
  •  [50] The Temple of Atal'Hakkar (Dungeon)
•  Helgrum the Swift
  •  [35] Neeka Bloodscar
•  Katar
  •  [43] Threat From the Sea
  •  [43] Threat From the Sea
  •  [45] Continued Threat
•  Tok'Kar
  •  [42] Lack of Surplus
  •  [45] Threat From the Sea

Neutral

•  Corporal Thund Splithoof
  •  [57] Heroes of Old
•  Fallen Hero of the Horde
  •  [45] Fall From Grace
  •  [50] The Disgraced One
  • [52] Warrior Kinship
  • [52] War on the Shadowsworn
  • [52] Voodoo Feathers (Dungeon)
  •  [57] The Stones That Bind Us
  •  [57] A Tale of Sorrow
  •  [57] Heroes of Old
  •  [58] Kirith (Elite)
  •  [60] The Demon Hunter
  •  [60] Uniting the Shattered Amulet (Elite)
  •  [60] You Are Rakh'likh, Demon (Elite)
•  Galen Goodward
  •  [38] Galen's Escape
•  Itharius
  •  [55] The Essence of Eranikus
  •  [55] In Eranikus' Own Words
•  Magtoor
  •  [35] Draenethyst Crystals

Class Trainers

Horde

•  Haromm <Shaman Trainer>
•  Kartosh <Warlock Trainer>
  •  Greshka <Demon Master>
•  Malosh <Warrior Trainer>
•  Ogromm <Hunter Trainer>
  •  Grokor <Pet Trainer>

Profession (Tradeskill) Trainers

Horde

•  Rogvar <Alchemy Trainer>

Merchants

Horde

•  Banalash <Trade Goods>
•  Gharash <Blacksmithing Supplies>
•  Grimnal <Mail & Plate Vendor>
•  Hartash <Weapon Merchant>
•  Innkeeper Karakul <Innkeeper>
•  Rartar <Alchemy Supplies>
•  Thralosh <Cloth & Leather Armor Merchant>
•  Thultash <Food & Drink Vendor>
•  Thultazor <Arcane Goods Vendor>

Neutral

•  Masat T'andr <Superior Leatherworker>

Various Services

Horde

•  Breyk <Wind Rider Master>
•  Hekkru <Stable Master>
•  Innkeeper Karakul <Innkeeper>