The Lower Peninsula of Michigan is the southern of the two major landmasses of the U.S. state of Michigan. It is surrounded by water on all sides except its southern border, which it shares with Ohio and Indiana. Geographically, the Lower Peninsula has a recognizable shape that many people associate with a mitten, with the mid-eastern region identified as The Thumb. This has led to several folkloric creation myths for the area, one being that it is a hand print of Paul Bunyan, a giant lumberjack and favorite folk character in Michigan. This has also led to the distinctive phenomenon of Lower Peninsula residents holding out their hand and pointing to a spot on it when asked where they are from. The penisula is sometimes divided into the Northern Lower Peninsula and Southern Lower Peninsula.

The Lower Peninsula has been nicknamed "The Mitten", "Below the Bridge", and occasionally "The L.P." (in parallel with "the U.P." for the Upper Peninsula). Residents of the Lower Peninsula are jokingly referred to as "Trolls" by residents of the Upper Peninsula, because they live "under the bridge".

Michigan (ⁱ/ˈmɪʃɨɡən/) is a state located in the Great Lakes region of the Midwestern United States. The name Michigan is the French form of the Ojibwa word mishigamaa, meaning "large water" or "large lake". Michigan is the 8th most populous of the 50 United States, with the 11th most extensive total area. Its capital is Lansing, and the largest city is Detroit. Michigan was admitted into the Union on January 26, 1837 as the 26th state.

Michigan has the longest freshwater coastline of any political subdivision in the world, being bounded by four of the five Great Lakes, plus Lake Saint Clair. Michigan is one of the leading U.S. states for recreational boating. The state has 64,980 inland lakes and ponds. A person in the state is never more than six miles (9.7 km) from a natural water source or more than 85 miles (137 km) from a Great Lakes shoreline. It is the largest state by total area east of the Mississippi River.

Michigan is the only state to consist of two peninsulas. The Lower Peninsula, to which the name Michigan was originally applied, is often noted to be shaped like a mitten. The Upper Peninsula (often referred to as "the U.P.") is separated from the Lower Peninsula by the Straits of Mackinac, a five-mile (8 km) channel that joins Lake Huron to Lake Michigan. The two peninsulas are connected by the Mackinac Bridge. The Upper Peninsula is economically important due to its status as a tourist destination. There is also a variety of natural resources to be found there, including a sizable amount of iron ore.