The following NPCs can be found in Swamp of Sorrows.
Questgivers[]
Alliance[]
Anchorite Avuun
[15-30] Onward to the Blasted Lands
[15-30] Prayerblossom
[15-30] Secrets of the Mire
[15-30] The Purespring
[15-30] Breath of Mist
[15-30] Remember the Light
Holaaru
[15-30] Draenethyst Crystals
[15-30] The Lost Ones
[15-30] The Harborage
Joanna Blueheart <Marshride Watch Commander>
[15-30] Lumbering Oafs
[15-30] Orcs and Humans
[15-30] Marking the Fallen
[15-30] Reinforcements Denied
[15-30] Tides of Darkness
[15-30] Assault on Stonard
[15-30] Cutting Supply
Horde[]
Dispatch Commander Ruag
[15-30] Lumbering Oafs
[15-30] Orcs and Humans
[15-30] Marking the Fallen
[15-30] Reinforcements Denied
[15-30] Tides of Darkness
[15-30] We're Under Attack!
[15-30] Neeka Bloodscar
[15-30] Okrilla and the Blasted Lands
Neeka Bloodscar
[15-30] Prayerblossom
[15-30] Secrets of the Mire
[15-30] Last Regrets
[15-30] The Purespring
[15-30] With Dying Breath
[15-30] Ruag's Report
Neutral[]
Baba Bogbrew
[15-30] Marshfin Madness
[15-30] The Darkest Depths
[15-30] Slithering Signs
[15-30] The Dragon and the Temple
Brono Goodgroove
[15-30] Drinks on the Rocks
Crazy Larry
[15-30] Can't Take It With Them
[15-30] Kill Gil
[15-30] In with a Bang
[15-30] Baba Bogbrew
Lord Itharius
[15-30] Pool of Tears
[15-30] Legends of the Sunken Temple
[15-30] Step One: The Priestess
[15-30] Step Two: The Bloodletter
[15-30] Step Three: Prophet
[15-30] Blessing of the Green Dragonflight
[20-30D] The Heart of the Temple (Dungeon: Temple of Atal'Hakkar)
[15-30] To Stonard
Pierre Fishflay <Chef de Cuisine>
[15-30] Tastes Like Strider
Trade Baron Silversnap <Baron of Bogpaddle>
[15-30] Maliciously Delicious
[15-30] Croc-Out
[15-30] Mostly Harmless
[15-30] Crazy Larry
Class Trainers[]
Horde[]
Haromm <Shaman Trainer>
Kartosh <Warlock Trainer>
Lorrin Foxfire <Portal Trainer>
Malosh <Warrior Trainer>
Ogromm <Hunter Trainer>
Grokor <Pet Trainer>
Profession (Tradeskill) Trainers[]
Horde[]
Rogvar <Alchemy Trainer>
Merchants[]
Alliance[]
Hull Forgehammer <Blacksmithing Supplies>
Masat T'andr <Superior Leatherworker>
Rebecca Blackman <Food & Drink>
Verad <Innkeeper>
Horde[]
Banalash <Trade Supplies>
Gharash <Blacksmithing Supplies>
Grimnal <Mail & Plate Merchant>
Hartash <Weapon Merchant>
Innkeeper Karakul <Innkeeper>
Rartar <Alchemy Supplies>
Thralosh <Cloth & Leather Armor Merchant>
Thultash <Food & Drink Vendor>
Thultazor <Alchemy Supplies & Reagents>
Neutral[]
Brita Bramblebrush <Alchemy Supplies>
Bullets Bigblast <Engineering Supplies>
Cap'n Geech <Innkeeper>
Darbo Stableflux <Blacksmithing Supplies>
Dronk Drophammer <Blacksmithing Supplies>
Frankie Goodtimes <Food & Drink>
Kizter Kahboom <Engineering Supplies>
Mitch Yostpaddle <Trade Goods>
Pierre Fishflay <Chef de Cuisine>
Sid Shillcopper <Food & Drink>
Skinner Selma <Leatherworking Supplies>
Spike Coilee <Herbalism Supplies>
Zipper Sizzlesnap <Fishing Supplies>
Various Services[]
Alliance[]
Joran <Stable Master>
Paola Baldwin <Gryphon Master>
Verad <Innkeeper>
Yedrin <Flight Master>
Horde[]
Breyk <Wind Rider Master>
Hekkru <Stable Master>
Innkeeper Karakul <Innkeeper>
Neutral[]
Cap'n Geech <Innkeeper>
Shecky Shrimpshoot <Stable Master>
Skeezie <Gryphon Master>
Other Notable NPCs[]
Alliance[]
Horde[]
Neutral[]
Hostile[]
Dreamwatcher Forktongue <Victim of the Nightmare> (Rare)
Duskfang
Fingat (Rare)
Gilmorian (Rare)
Hr'nglth the Lost
Jade <Victim of the Nightmare> (Rare)
Lost One Chieftain (Rare)
Lost One Cook (Rare)
Molt Thorn (Rare)