Odin is a city in Watonwan County, Minnesota, United States, along the South Fork of the Watonwan River. The population was 106 at the 2010 census.
According to the United States Census Bureau, the city has a total area of 0.4 square miles (0.9 km²), all of it land.
As of the census of 2000, there were 125 people, 62 households, and 36 families residing in the city. The population density was 344.6 people per square mile (134.1/km²). There were 66 housing units at an average density of 182.0 per square mile (70.8/km²). The racial makeup of the city was 100.00% White.