Montezuma is a town in Reserve Township, Parke County, in the U.S. state of Indiana. The population was 1,022 at the 2010 census.
Montezuma was laid out in about 1824. The town was named for Moctezuma II, ruler of Mexico. A post office has been in operation at Montezuma since 1825.
Montezuma is located at 39°47′32″N 87°22′13″W (39.792172, -87.370328); it lies along the Wabash River on the western border of Parke County, where U.S. Route 36 crosses the river. Most of the town is in Reserve Township, but the south edge extends into Wabash Township.
According to the 2010 census, Montezuma has a total area of 0.6 square miles (1.55 km2), all land.
Montezuma is the birthplace of Gordon Allport (1897–1967), a noted personality theorist.
As of the census of 2010, there were 1,022 people, 417 households, and 274 families living in the town. The population density was 1,703.3 inhabitants per square mile (657.6/km2). There were 514 housing units at an average density of 856.7 per square mile (330.8/km2).