| Jin'Zil's Forest Magic | 20 | Horde |   2,100 XP |
| Job Opening: Guard Captain of Revantusk Village | 46 | Horde |  6,100 XP75 |
| JOB OPPORTUNITY: Culling the Competition | 45 | Both | 4,400 XP210 |
| Journey to Hillsbrad Foothills | 19 | Horde | 1,150 XP9 |
| Journey to Stonetalon Peak | 18 | Alliance | 675 XP |
| Journey to the Crossroads | 9 | Horde | 230 XP |
| Journey to the Marsh | 30 | Both | |
| Jungle Secrets | 30 | Alliance | |
| Junkboxes Needed | 50 | Both | |
| Just Compensation (8 parts) | 58 | Alliance |                 +10210,000 XP180(all 28 quests) |
| Ka-Boom! | ? | Alliance | none known |
| Kayneth Stillwind | 24 | Alliance | |
| Keeper of the Flame | 10 | Both | |
| Key to the City | 30 | Horde | none known |
| Kezan's Taint (3 parts) | 60 | Both | |
| Khan Dez'hepah | 30 | Horde |   7,200 XP(all 2 quests) |
| Khan Hratha | 30 | Horde | |
| Khan Jehn | 30 | Both | |
| Khan Jehn | 30 | Both | |
| Kibler's Exotic Pets | 55 | Both |  6,400 XP90 |
| Kidnapped Elder Torntusk! | 46 | Horde |   15,900 XP225(all 3 quests) |
| KILL ON SIGHT: Dark Iron Dwarves | 48 | Horde |  32,250 XP850(all 5 quests) |
| Kim'jael Indeed! | 47 | Both |  13,100 XP168(all 2 quests) |
| Klockmort's Essentials | 24 | Alliance | 250 XP |
| Knowledge in the Deeps | 10 | Alliance |  2,750 XP |
| Knowledge of the Orb of Orahil | 35 | Alliance | 1,350 XP |
| Knowledge of the Orb of Orahil | 35 | Horde | 1,350 XP |
| Knowledge of the Orb of Orahil | 35 | Alliance | 1,350 XP |
| Knowledge of the Orb of Orahil | 35 | Horde | 1,350 XP |
| Kobold Candles | 3 | Alliance |     1,280 XP475(all 2 quests) |
| Kodo Roundup | 30 | Both |   2,000 XP |
| Kolkar Leaders | 11 | Horde |  4,925 XP51(all 4 quests) |
| Korrak the Bloodrager | 51 | Alliance | |
| Krastinov's Bag of Horrors | 55 | Both | none known |
| Krazek's Cookery | 32 | Alliance |  6,350 XP30(all 3 quests) |
| Kris of Unspoken Names | 60 | Both |  6,600 XP |
| Kyle's Gone Missing! | 7 | Horde | none known |
| Lack of Surplus (2 parts) | 35 | Horde | |
| Lakota'mani | 10 | Horde | 1,300 XP |
| Land Ho! | 35 | Both | |
| Lard Lost His Lunch | 44 | Horde |  4,550 XP140 |
| Large Cluster Rockets | 55 | Both | |
| Large Rockets | 35 | Both | |
| Larion and Muigin | 47 | Horde |  16,700 XP235(all 4 quests) |
| Launch the Attack! | 1 | Horde | none known |
| Lazy Peons | 3 | Horde | 900 XP150(all 2 quests) |
| Leather Technique | 30 | Both | none known |
| Lee's Ultimate Test Quest... of Doom! | 1 | Both | |
| Legacy Reward: Replica Ironforge Air Rifle | ? | Both | none known |
| Legacy Reward: Spectral Bear Cub | ? | Both | none known |
