Non celtic fey,
Oriental adventures has Hengeyokai, animal shapeshifters
Japan I believe has fox women legends which are portrayed in Complete Minions by Bastion Press (a 3.5 monster book) and Jade Dragons and Hungry Ghosts (a 3.0 oriental monster book by Green Ronin). I think Jade Dragons has a second little fey like critter but I can't remember the name. Minions also has the nagley which are fantasy celtic like fey.
Bane Leger (Bloodstone Press) one and two have real world other culture creatures, I'm not sure if they have fey in them though.
Joe's Book of Enchantment (Throwing Dice Games) has a few fey as well.
I think there is a whole fey sourcebook for AEG's world of Theah, their d20 version of their Seven Seas setting.