I will update this once I find the other answers, but hereHere is what I have found so farthe list:
Anglers
- Quartermaster - Nat Pagle
August Celestials
- Horde Quartermaster - Sage Lotusbloom
- Alliance Quartermaster - Sage Whiteheart
Brewmasters
- Quartermaster - Teng Thundermalt (could not find a link). Located right outside the Stormstout Brewery in the Valley of The Four Winds.
Cloud Serpents
- Quartermaster - San Redscale
Golden Lotus
- Quartermaster - Jaluu the Generous
Klaxxi
- Quartermaster - Ambersmith Zikk
Lorewalkers
- Quartermaster - Tan Shin Taio
Shado-Pan
- Quartermaster - Rushi the Fox
Tillers
- Quartermaster - Gina Mudclaw
Sources: MMOChampion, WoWDB via Item look ups, WoWJuju.