Manly is a city in Worth County, Iowa, United States. The population was 1,342 at the 2000 census. It is part of the Mason City Micropolitan Statistical Area.
Manly is located at 43°17′16″N 93°12′14″W / 43.28778°N 93.20389°W / 43.28778; -93.20389 (43.287766, -93.203800).
According to the United States Census Bureau, the city has a total area of 1.4 square miles (3.7 km²), all of it land.