Marble Clubs
Amana Marble Meet
Badger Marble Club
Buckeye Marble Collectors Club
Indiana Marble Club
International Association of Marble Collectors
Kansas City Marble Collectors Club
Peltiermarbles.com
Texas Marble Collectors Club
West Virginia Marble Collectors Club

Marble Forums
Christensen Marble Collectors Discussion Forum
Jabo Land
LandOfMarbles
Marble Forum
Marble Mental
Marvelous Mibs
The Marble Connection

Marble Dealers
American Marbles, Mountaineer Style


Pete has a great selection of marbles and marble related stuff on his site, well worth the visit.

Little Works of Art Marbles
Marble Display Case Company


Alan Basinet's Auctions.  This guy sells some of the nicest marbles on the internet. His marbles are expertly graded and he ships very quickly, they arrive on time and as described.  Check him out, you won't be disappointed.

MarbleBert.com
Marblequeen.com
marbleshowcase.com
MegaGlass.com

Sedona Antiques

Contemporary Marble Artists
Crystal Myths, Inc
David P. Salazar Glass
Davis Marbles
Drew Fritts Marbles
Fulton Parker Glass
Josh Simpson Contemporary Glass
JT's Marbles
Mad Man Marbles
Moon Marble Company
Pavliscak Studios
Round Rocks, Etc.
Sirius Sunlight Glass Studio
Winlock Marbles

Personal Marble Pages
John's Marbles
Mary's Art and Marbles
Lana's Marble Mirage
Lolly's Marbles, Paperweights and Pets
Mikes Marbles and Family

Miscellaneous Marble Sites
Akron Marbles
The Collectors Weekly Art Glass
Bum-Dee
The National Marble Museum
Show Your Marbles