Flag of Ohio
|Design||Guidon consisting of 5 horizontal stripes alternating between red and white. The chevron is azure containing a white and red "O" and 17 white stars. |
The flag was designed in 1901 by John Eisenmann for the Pan-American Exposition and adopted in 1902. Before that, for nearly a century after statehood, Ohio had no legally authorized state flag. One unsuccessful proposal called for a design based on the state seal.
Ohio's swallowtail flag is the only non-rectangular U.S. state flag. 
The flag's red, white, and blue elements symbolize the state's natural features and order of admission into the Union. A prominent disc in the flag's triangular canton is suggestive of the state's name.