M-28 Business (Michigan highway)

There have been three different highways in the U.S. state of Michigan to bear the designation, Business M-28 or BUS M-28, M-28BR.

• M-28 Business (Ishpeming–Negaunee, Michigan), still extant
• M-28 Business (Marquette, Michigan), decommissioned
• M-28 Business (Newberry, Michigan), decommissioned