Ernest Robert Moore (November 1, 1869 – March 4, 1957) was an American politician and banker.
Born in Anamosa, Iowa, he moved with his family to Cedar Rapids, Iowa. He served in the Spanish–American War. He was a banker in Cedar Rapids. Moore served in the Iowa House of Representatives and as Lieutenant Governor of Iowa, serving under Governor William L. Harding. He died in Cedar Rapids, Iowa.