| Under the Choking Sands
| 30 | 30-35
| | | 13 74
| Uldum |
| Under the Cover of Swiftwing
| 50 | 50
| | | 2 57
| War Campaign - Alliance |
Under the Crooked Tree
Daily | 40 | 40
| | | | Hallow's End |
| Under the Illusion
| 60 | 60
| | | 25 74
| Korthia |
| Under the Shadow
| 21 | 21
| | | | Invasion |
| Under the Surface
| 70 | 70
| | | 28 9
| Emerald Dream |
| Under Their Noses
| 10 | 10-60
| | | 2 57
| Tiragarde Sound |
| Undercover Agent: Nugg Lumbo
| | | | | 25 74
| Brawler's Guild |
| Undercover Security
| 60 | 60
| | | 51 48
| Ember Court |
| Undercutting the Competition
| 15 | 15-30
| | | 10 50
| Mana-Tombs |
| Underfoot
| 50 | 50
| | | | Zuldazar |
| Underground and Overwhelmed
| 73 | 73-75
| | | 23 40
| The Ringing Deeps |
| Underground Economics
| 75 | 75-78
| | | 23 40
| Hallowfall |
Underground Economy
Daily | 30 | 30-35
| | | 13 74
| Deepholm |
| Underlight Ore Samples
| | 1-30
| | | 10 50
| Ghostlands |
Underlight Queen
Daily | 70 | 70
| | | | Zaralek Cavern |
| Underlord Xerxiz
| 50 | 50
| | | | Nazmir |
| Undersea Inflation
| 30 | 30-35
| | | 13 74
| Shimmering Expanse |
| Undersea Sanctuary
| 30 | 30-35
| | | | Kelp'thar Forest |
| Undersea Survey
| 45 | 45
| | | | Suramar |
| Understanding the Language of Death
| 15 | 15-30
| | | | Dragonblight |
| Understanding the Mok'Nathal
| 20 | 20-30
| | | 10 50
| Blade's Edge Mountains |
| Understanding the Scourge War Machine
| 15 | 15-30
| | | | Dragonblight |
| Understanding The Shado-Pan
| 25 | 25-35
| | | 13 74
| Townlong Steppes |
| Understanding The Shado-Pan
| 25 | 25-35
| | | 13 74
| Townlong Steppes |
| Understanding the Shadowlands
| 50 | 50-60
| | | 12 87
| Oribos |
| Understanding Their Grace
| 10 | 10-70
| | | | Maruuk Centaur |
| Undersupplied in the Undercity
| | 1
| | | | Pilgrim's Bounty |
Underwater Menace
Daily | 10 | 10-70
| | | 2 80
| Thaldraszus |
| Underworld Loam
| 25 | 25-30
| | | 10 50
| Shadowmoon Valley (Outland) |
| Undoing the Damage
| 73 | 73-75
| | | 23 40
| The Ringing Deeps |
| Undying Totems
| 20 | 20-60
| | | 25 74
| Nazmir |
| Undying Twilight
| 30 | 30-35
| | | 13 74
| Deepholm |
| Unearthed Artifacts
| 50 | 50
| | | 23 40
| Uldum |
| Unearthed Keeper
| 50 | 50
| | | | Uldum |
| Unearthed Keeper
| 50 | 50
| | | | Uldum |
| Unearthed Keeper
| 50 | 50
| | | | Uldum |
| Unearthed Keeper
| 50 | 50
| | | | Uldum |
| Unearthed Knowledge
| 5 | 5-30
| | | 5 25
| Darkshore |
| Unearthed Magic
| 35 | 35-40
| | | | Garrison Support |
| Unearthed Magic
| 35 | 35-40
| | | | Garrison Support |
| Unearthed Troublemakers
| 10 | 10-70
| | | 28 9
| The Waking Shores |
| Unending Gorilla Warfare
| 50 | 50
| | | | Zuldazar |
| Unending Gorilla Warfare
| 50 | 50
| | | | Zuldazar |
| Unexpected Aid
| 35 | 35-60
| | | 25 74
| Alliance War Campaign |
| Unexpected Allies
| 10 | 10-45
| | | 20 22
| Highmountain |
| Unexpected Guests
| 45 | 45
| | | 2 2
| Priest Campaign |
| Unexpected Results
| | 1-30
| | | 10 50
| Eversong Woods |
| Unexpected Visitors
| 10 | 10-45
| | | 10 11
| Demon Hunter Campaign |
| Unfair Fight
| 60 | 60
| | | 25 74
| Maldraxxus |
| Unfair Trade
| 10 | 10-35
| | | 13 74
| The Jade Forest |
| Unfair Trade
| 15 | 15-35
| | | 27 48
| Pandaren Campaign |
| Unfamiliar Waters
| 30 | 30-35
| | | 13 74
| Orgrimmar |
| Unfinished Business
| 10 | 10-30
| | | 10 50
| Zangarmarsh |
| Unfinished Business
| 20 | 20-30
| | | | Gundrak |
| Unfinished Gordok Business
| 15 | 15-30
| | | | Dire Maul |
| Unfinished Thinking Cap
| 10 | 10-70
| | | | Valdrakken |
| Unfinished Treatise on the Properties of Stormscale
| 10 | 10-45
| | | 20 22
| Skinning |
| Unfit for Death
| 10 | 10-30
| | | | Borean Tundra |
| Unforgivable Intrusion
| 60 | 60
| | | 25 74
| Zereth Mortis |
| Unfortunate Measures
| | 1-20
| | | 5 35
| Sunstrider Isle |
| Unfriendly Skies
| 10 | 10-60
| | | | Stormsong Valley |
| Unfulfilled Requests
| 78 | 78-80
| | | 2 34
| Azj-Kahet |
| Unfurling Plan
| 30 | 30-35
| | | 13 74
| Shimmering Expanse |
| Unfurling Plan
| 30 | 30-35
| | | 13 74
| Shimmering Expanse |
| Ungirthin' the Earthen
| 70 | 70-80
| | | 23 40
| Isle of Dorn |
| Un'Goro Crater Circuit
| 10 | 10-70
| | | | Un'Goro Crater |
| Un'Goro Crater Circuit - Advanced
| 10 | 10-70
| | | | Un'Goro Crater |
| Un'Goro Crater Circuit - Challenge
| 10 | 10-70
| | | | Un'Goro Crater |
| Un'Goro Crater Circuit - Reverse
| 10 | 10-70
| | | | Un'Goro Crater |
| Un'Goro Crater Circuit - Reverse Challenge
| 10 | 10-70
| | | | Un'Goro Crater |
| Unholy Chosen
| | | | | | |
| Unholy Chosen
| | | | | | |
| Unholy Chosen
| | | | | | Artifact |
| Unholy Infusion
| 30 | 30
| | | 21
| Legendary |
| Unholy: The Folly of Levia Laurence
| 45 | 45
| | | 20 22
| Artifact |
| Unintelligible Intelligence
| 10 | 10-40
| | | 1 69
| Garrison Support |
| Unintended Consequences
| 50 | 50
| | | 23 40
| Crucible of Storms |
| Unintended Consequences
| 50 | 50
| | | 23 40
| Crucible of Storms |
| Unit 17
| 10 | 10-60
| | | | Mechagon |
| Unit 35
| 10 | 10-60
| | | | Mechagon |
| Unit 6
| 10 | 10-60
| | | | Mechagon |
| United As One
| 45 | 45
| | | 10 11
| Priest Campaign |
| United As One
| 45 | 45
| | | 20 22
| Paladin Campaign |
| United In Pride
| 60 | 60
| | | | Covenant Assaults |
| Uniting Kul Tiras
| 50 | 50
| | | 25 74
| Alliance War Campaign |
| Uniting Kul Tiras
| 50 | 50
| | | 23 40
| Alliance War Campaign |
| Uniting Severed Threads
| 78 | 78-80
| | | | Azj-Kahet |
| Uniting the Isles
| 45 | 45
| | | | World Quest |
| Uniting the Isles
| 45 | 45
| | | | World Quest |
| Uniting Zandalar
| 50 | 50
| | | 25 74
| Horde War Campaign |
| Uniting Zandalar
| 50 | 50
| | | 25 74
| Horde War Campaign |
| Unity
| 60 | 60
| | | 12 87
| Abominable Stitching |
Universal Remote-Explode
Daily | 15 | 15-35
| | | 13 74
| Landfall |
| Unknowable Power
| 40 | 40
| | | 16 98
| Tanaan Jungle |
| Unknown Assailants
| 10 | 10-56
| | | 2 57
| Ardenweald |
| Unleash Hell
| 10 | 10-35
| | | 13 74
| The Jade Forest |
| Unleash the Beast
| | 1-20
| | | 5 35
| Gilneas |
| Unleash the Beasts
| 30 | 30-60
| | | 51 48
| Vol'dun |
| Unleash the Raptors
| 15 | 15-30
| | | 10 50
| Dustwallow Marsh |
