Yell Township is one of seventeen townships in Boone County, Iowa, USA. As of the 2000 census, its population was 2,273.
Yell Township was organized in 1852. It is named for Colonel Yell, who fell at the Battle of Buena Vista.
Yell Township covers an area of 32.58 square miles (84.4 km2) and contains one incorporated settlement, Ogden. According to the USGS, it contains six cemeteries: Bluff Creek, Buckley, Hickory Grove, Milton Lott Grave, Mount Olive and Rose Hill.