DISCLAIMER: These lists are not a recommendation, they are merely a reference to hunter loot in instances.

Karazhan

Attumen the Huntsman
[Stalker's War Bands]
[Gloves of Dexterous Manipulation] - Leather.
[Worgen Claw Necklace]
[Steelhawk Crossbow]

Moroes
[Emerald Ripper]

Opera Event
[Beastmaw Pauldrons] - Shared Drop.
[Romulo's Poison Vial] - Romulo and Julianne.
[Blade of the Unrequited] - Romulo and Julianne.
[Legacy] - Oz.
[Wolfslayer Sniper Rifle] - Red Riding Hood.
[Big Bad Wolf's Paw] - Red Riding Hood.

Maiden of Virtue
[Gloves of Quickening]

The Curator
[Demon Stalker Gauntlets]
[Garona's Signet Ring]

Chess Event
[Fiend Slayer Boots]
[Bladed Shoulderpads of the Merciless] - Leather.
[Girdle of Treachery] - Leather.

Terestian Illhoof
[Girdle of the Prowler]

Shadow of Aran
[Saberclaw Talisman]
[Drape of the Dark Reavers]
[Steelspine Faceguard]

Netherspite
[Skulker's Greaves] - Leather.
[Rip-Flayer Leggings]

Nightbane
[Ferocious Swift-Kickers]
[Chestguard of the Conniver] - Leather.
[Scaled Breastplate of Carnage]

Prince Malchezaar
[Sunfury Bow of the Phoenix]
[Ring of a Thousand Marks]
[Farstrider Wildercloak]
[Malchazeen]
[Demon Stalker Greathelm]

Animal Bosses
[Ravager's Bands] - Random Stats.
[Lurker's Belt] - Random Stats.
[Glider's Sabatons] - Random Stats.

Trash
[Belt of the Tracker]