Indiana and within the waters of Lake Michigan it also borders Michigan.
Michigan shares borders with Ohio and Indiana to the south. And Wisconsin, as the Upper Peninsula borders it up north. (There are water borders within the Great lakes with Illinois and Minnesota.)
Wisconsin borders Minnesota and the upper peninsula of Michigan
Michigan
The only Great Lake that borders Indiana is Lake Michigan.
Canada
The only Canadian province which borders Michigan is Ontario.
Ohio borders Indiana to the east and shares borders with both Michigan and Pennsylvania. Specifically, Ohio is situated to the southeast of Indiana, to the southwest of Michigan, and to the south of Pennsylvania.
Illinois borders Wisconsin to the South, to the North is Canada, Lake Superior, and the UP of Michigan, to the East is Lake Michigan, and to the West is the Mississippi River and Minnesota===========================Psst. Don't look now, but Wisconsin does not share a border with Canada. The borders of Minnesota and Michigan converge in Lake Superior, south of the International Boundary.
The state of Michigan borders on four of the five Great Lakes: Superior, Michigan, Huron and Erie. Michigan does not border on Lake Ontario.
Michigan
The state of Michigan borders Lake Michigan and Lake Superior. The capitol of this state is Lansing and is home to almost 10 million people.