• The International Wizard of Oz Club
• The Daily Ozmopolitan Oz news page
• Books of Oz, Oz project.
• The Oz WikiProject, an all-Oz version of Wikipedia
• The Smithsonian Institute's Wizard of Oz exhibit
• The Wonderful Wizard of Oz Website
• Ozcast, an online Oz radio talk show.

Oz Blogs

• The Wonderful Blog of Oz
• Curiozity Corner

Oz Events & Conventions

• The Chesterton, Indiana, Oz Festival
• OzFest in Chittenango, New York — L. Frank Baum's hometwon throws a party for their native son
• Oz-toberfest, autumn Oz event in Kansas.
• The Wizard of Oz Park in Banner Elk, North Carolina.
• Dorothy's House in Liberal, Kansas
• The "Land of Oz" area at Universal Studios Japan
• The Oz Museum in Wamego, Kansas.
• The Matilda Joslyn Gage Foundation — they sponsor an annual Weekend in Oz, since Gage was L. Frank Baum's mother-in-law

Oz Merchants

• The Yellow Brick Road Shop
• Oz Central

Ozzy Resources for Teachers

• A literature guide to The Wizard of Oz for teachers to use — you can also download it as a PDF file
• Teaching The Wizard of Oz, both the book and the movie
• Oz resources from Clemson University
• Teach with movies: The Wizard of Oz