I believe this list is current for Adidas schools. The bolded Ones are the ones I would consider big. There are a few other that may be considered big. I also read that Tennessee is also going Nike.
Adidas Akron Zips Arkansas State Red Wolves Bowling Green Falcons Brown Bears Bucknell Bison Central Michigan Chippewas Cincinnati Bearcats Denver Pioneers Duquesne Dukes Durham College Drake Bulldogs Eastern Michigan Eagles FAU Owls FIU Golden Panthers Franciscan University of Steubenville Georgia State Panthers Grand Valley Lakers High Point University Howard Payne University Indiana Hoosiers Kansas Jayhawks Lindenwood Lions[2] Louisville Cardinals Jacksonville State Gamecocks Loyola Marymount Lions Lyndon State College Maine Black Bears Mercer University Miami (OH) Michigan Wolverines Milwaukee Panthers Mississippi State Bulldogs Mount Olive College Nebraska Cornhuskers Nebraska-Omaha Mavericks NMSU Aggies NC State Wolfpack Northern Illinois Huskies University of Ontario Institute of Technology Ridgebacks Saint Mary's Gaels SIU Edwardsville Cougars SMU Mustangs Tennessee Volunteers Texas A&M Aggies Troy Trojans UC Davis Aggies UCLA Bruins UIC Flames ULM Warhawks UMass Minutemen Utah Valley Wolverines Weber State Wildcats Western Michigan Broncos Wisconsin Badgers