Casimiro Barela (March 4, 1847 – December 18, 1920) was an American politician responsible for authoring the Constitution of Colorado. He served in both the Colorado Territory legislature and the legislature of the State. He was known as the "Father of the Colorado Senate" and served for 40 years. According to scholars, Barela's legacy in Colorado would show a willingness to work for the business class but to also guard the Hispanic culture and Spanish language speaking populace from the newer culture being introduced from the east, all while acting as a politician-patron for the people of Trinidad, Colorado.