Cato Sells (October 6, 1859 – December 30, 1948) was a commissioner at the Bureau of Indian Affairs from 1913 to 1921.

In 1878 he read law with Charles Alvord Bishop and in 1880 was admitted to Iowa State Bar Association and began practice at La Porte City, Iowa.

In 1887 he was chairman of the committee and was a delegate to the 1888 Democratic National Convention.

In 1892 was he was elected as a trustee of the Iowa State College of Agriculture.

In 1914 he banished books that taught anything concerning the Asian origins of Indigenous peoples of the Americas.