Helen Kalin Klanderud (June 9, 1937 – October 3, 2013) was an American politician, clinical social worker and attorney. In 1980, Klanderud was elected to the Pitkin County, Colorado, Board of County Commissioners, becoming the first woman to serve as a county commissioner. She later served as the Mayor of Aspen, Colorado, for three-consecutive terms from 2001 to 2007. As mayor, Klanderud was an active proponent of efforts to study and address climate change, initiatives for which the city received national and international recognition. A community service award has been created in her name as part of the Pitkin Country Cares Award program.