I know of a few that are not listed among the above posted links, if you'd like to add them.
Freeland, MI - Northern Lights Tribal Belly Dance
Chesterfield, MI - Czigany Tribe
Bay City/Midland/Saginaw/Davison/Auburn, MI - Belly Dance Divas
Saginaw, MI - Zumurrud Middle Eastern Dance Company
Saginaw, MI - Raqs Mystique
Kalamazoo, MI - Boheme Tribal