Arnt O. Rhea (October 10, 1852 – May 25, 1937) was an American politician, businessman, and educator.
Rhea went to La Crosse Business College, Gale College, River Falls Normal School, and Winona Normal School.
He taught school in La Crosse County and elected La Crosse County Superintendent of Schools.
In 1913, Rhea served in the Wisconsin State Assembly and was a Republican.
This article about a Republican Party member of the Wisconsin State Assembly born in the 1850s is a stub.