M & S Decorators
M&K (See Marks & Spencer)
Maastricht (See Royal Leerdam)
MacBeth-Evans
MacKenzie-Childs
Macryl Crystal
Macy's (Crystal)
Madison & Max
Maestro Glass
Magnor Crystal
Main Ingredients Crystal
Maleras (Sweden)
Manorisms
Manu Crystal
Mar Home Decors
Marc Aurel
Marc Blackwell Glass
Marie Claire Crystal
Marika
Marimekko
Marinex
Mario Cioni
Mario Luca Giusti
Marion Glass
Mariposa
Mark Roberts
Market Place
Marks & Spencer
Marlboro Street Glass Works
Marshall Field
Martha Stewart
Martin Benito Crysta
Marw
Mary Jurek Design Glassware
Maryland Glass Company
Match Pewter
Mats Jonasson
Matsuda Glass
Maxwell & Williams
Mayfair & Jackson
Mazzoli Glass
McBride
McDonald Glass Works
MCG (See Metropolitan Glass)
McKee
Mdina
Medallion
Meissen Crystal
Meltzer Glass
Memories General Sto
Merritt Glass Co
Metrokane
Metropolitan Crystal (See Metropolitan Glass)
Metropolitan Glass
Metropolitan Museum of Art
Meyr's Neffe Crystal
Michael Aram
Michael C Fina
Michael Graves Desig
Michael Wainwright
Michael Weems
Mid-Atlantic
Midland
Mignon Faget Crystal
Mikasa
Mikimoto Crystal
Mila Intl
Milchell Gaudet Glas
Miller Import
Miller Rogaska (See Rogaska)
Millersburg
Minton (See Webb Corbett)
Mirabell of Austria
Mirror Images
Missoni
Mitani
Miyazaki Co., Ltd
Mnfc Crystal
Model Flint
Modigliani Glass
Momo Panache Crystal
Monarch Crystal
Moncrief's
Monogram
Monongah
Monongahela
Mont Royale
Montbronn
Moravian Glassworks
Morecroft Cut Crystal
Morgantown
Moser
Mosser (Ohio)
Mottahedeh
Mountaineer
Mozart Crystal
Mse (See Martha Stewart Crystal)
Mt Washington Glass Works
Mud Pie
Multi-Industries
Murano Crystal
Musee des Arts Decoratifs
Museum of Modern Art
Mystic