Seattle Pottery Supply is a pottery and ceramics supplier serving artists since 1975. The company describes itself as a producer of clay, glaze, and kilns, with kilns manufactured in-house, and offers an online catalog for potters building or equipping a studio. Its clay selection includes stoneware, earthenware, paperclay, porcelain, raku clay, casting slip, Egyptian paste, and moist pugged clay, with options organized by firing range.

The glaze range includes more than 100 products, alongside low-fire and mid-range kits, raku glazes, underglazes, textured and special-effects glazes, wax resist, and lusters. Seattle Pottery Supply also sells pottery kilns, wheels, banding wheels, slab rollers, tile cutters, and kiln shelves, plus tools and accessories for hand-building, throwing, trimming, sculpting, and glazing. Additional offerings include brushes, ribs, stamps, texture tools, pyrometric cones, kiln ventilation equipment, raw ceramic materials, and pottery aprons.

Customers can shop products by type, firing cone, or brand, including Seattle Pottery Supply, Laguna Clay, Shimpo, and Brent