Cascadia, a term that derives from the Cascade Range, may refer to:

• the Pacific Northwest
• Cascadia (independence movement)
• 1700 Cascadia earthquake
• Cascadia subduction zone
• Cascadia, Oregon: a ghost town and Cascadia State Park.
• Discovery Institute's Cascadia Center for Regional Development and Annual Cascadia-Microsoft Conference on Transportation Technology.
• Cascadia, Washington, a planned community
• Cascadia Region Green Building Council

This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.