Ellen Stuart Roberts (born August 27, 1959 ) is an attorney and former Republican legislator in the U.S. State of Colorado. From 2006-2010, Roberts served as the State Representative for House District 59. In 2010, she was elected to Senate District 6 and served until her resignation at the end of 2016. In 2015, she was elected to serve as the President Pro-Tem for the Colorado State Senate, a position she held until her resignation.