Tile and Mosaic Organizations and Suppliers:
 

British Association for Modern Mosaics
There's a lot going on with mosaics in Britain.
Custom Mosaic
Suppliers of vitreous glass mosaics, mosaic kits and mosaic accessories..
Mad Mosaics
Classes and supplies from Susan Jeffreys.
Mosaic Age
Custom wrought iron tables for mosaic panels.
Mountaintop Mosaics
Our favorite source for mosaic materials and tools.
Mosaic Art Supply
Another excellent source of mosaic supplies and instruction.
Society of American Mosaic Artists
The organization for American artists working with mosaics.
Tile Heritage Society
A wonderful non-profit working to preserve historic ceramic
surfaces. Great annual conventions!
Tiles on the Web
The place to find everything related to art tiles on the internet.
Wits End Mosaics
Supplies, classes and more, with many excellent links.
 

Other mosaic artists:

Angela Casazza
Fascinating vessels done in the "Pique Assiette" tradition.
Lia Catalano
Mosaic panels in a wide variety of techniques and subjects.
Carlos and Jason Cohen
A father-son team creating classic and contemporary panels.
Evan Glassman's Studio E
An accomplished mosaicist doing large commercial projects.
George Fishman Mosaics
A master of portraiture and landscape.
Paula MacLeod
Mosaiced flowerpots and much more.
Sonia King Mosaics
Contemporary murals and more. Great source for books.
Cole Sonafrank
Has Links to more than 100 other mosaic studios.
Norman Tellis
Beautiful images of classical mosaics.

Other Ceramic Tile Artists:

Alchemie Ceramic Tile Studio
Ram pressed art tiles. Specialists in Batchelder reproductions.
Folk Tiles
Some lovely animal and other images by Heather Goff.
The Jungle Shop Home Decor
Offering floor and tiffany table lamps, lamp shades, glass vases,
candles, holders, picture frames, blankets, throws, table top fountains,
kids furniture, nursery decor, garden benches, more.
Just Susan
Fine and interesting painted tiles.
Motawi Tileworks
One of the oldest and most respected art tile studios.
Original Features
A British company that specializes in restoration of Victorian and
Eduardian encaustic tile floors.
Surving Studios
Wonderfully detailed porcelain tiles featuring creatures of the
sea.
Terrapin Tile
Artists that do a number of tiles with various leaf impressions.
Tiles by Mimi
A fine painter and tile muralist.
Wilburton Pottery
Rough edged sculptural tiles that look great in gardens.