Minnesota State Highway 43 is a highway in southeast Minnesota, which runs from its intersection with State Highway 44 in Mabel and continues north to its northern terminus at the Wisconsin state line at Winona, where it becomes Wisconsin Highway 54 upon crossing the Mississippi River.

Winona is a city in and the county seat of Winona County, Minnesota, United States. Located in bluff country on the Mississippi River, its most noticeable physical landmark is Sugar Loaf. The population was 25,948 at the 2020 census.