Hauser Art Glass Co. and Willet Stained Glass Studios
Willet Hauser Architectural Glass has created or restored windows in all 50 states and 14 countries. With over 70 employees and two studio locations, they serve the architectural and stained glass needs of buildings in all sections of the United States.
http://www.willethauser.com

Okandan Glass
Okandan Cam San. Ve Tic. A.S.
http://www.okandanglass.com/

The Glass House
Family owned and operated business specializing in custom stained glass, repairs and restoration, lessons, and hobbyist supplies.
http://www.thestainedglasshouse.com

Linley Stained Glass Studios
Glass conservation, restoration and creation. Protective guards and metalwork.
http://www.linleystainedglass.com/

Verrerie de Saint-Just
French manufacturers of antique, hand-blown stained glass for architecture, fusing, restoration, leaded windows and projects. Glass includes flashed and multi-colored (bariolé).
http://www.saint-gobain-glass.com/saint-just/indexEN.htm

Jim Anderson Stained Glass
Specializes custom stained or etched glass as well as restoration. [Requires Flash]
http://www.jimandersonstainedglass.com

Mezalick Design Studio, LLC
custom stained glass windows, historic stained glass restoration, mosaics, statuary, religious items
http://www.mezalick.com/

Laws Stained Glass Studios, Inc.
Serving churches for over 50 years, Laws Stained Glass Studios, Inc. has become a namesake for high quality stained glass windows. A leader in the stained glass industry, Laws Stained Glass Studios, Inc. features work in 22 states and internationally. Throughout the years, Laws Stained Glass Studios, Inc. has produced a wide variety of stained glass windows in an array of styles and designs to meet the customer's needs.
http://lawsstainedglass.com

Custom Glass Corporation
Custom Glass Corporation offers Custom Fabricated Glass, Specialty Glass, Bent Glass, Bulletproof Glass, Silk Screened Glass, Security Glass, Transportation Glass, Bullet Resistant Glass, Safety Glass, and much more
http://www.customglass.com

NGF Canada Ltd
Manufacturer of specialised glass fibre, rubberized glass cord and glass flake. Owned by NGF (Europe), part of NSG (Japan). E-glass, K-glass and U-glass
http://www.ngfcanada.com