Mackinaw or related spellings is the name of several different places and things, mostly related to the area where Lake Michigan meets Lake Huron. Mackinac is a Native American word which is generally pronounced as Mac in aw.

• Straits of Mackinac connects the lakes and separates the Upper and Lower Penninsulas of Michigan
• Mackinac Island, an island east of the straits which bans automobiles
• Mackinac Island State Park, which preserves a large part of the island
• Fort Mackinac, a British, later American fort on the island
• Fort Michilimackinac, a British fort on the south side of the straits
• Mackinaw City, Michigan, village on the south side of straits
• Mackinac Bridge bridges the straits
• Mackinac Point, perhaps the northernmost point in the Lower Penninsula of Michigan
• Mackinac Point Lighthouse
• Mackinaw boat, a type of small sailboat used in the Upper Great Lakes
• Mackinaw cloth, a heavy wool cloth
• Mackinaw River, a tributary of the Illinois River
• USCGC Mackinaw (WAGB-83), a United States Coast Guard icebreaker on the Great Lakes