Richard Penn Kemble (January 21, 1941 – October 15, 2005), commonly known as "Penn," was an American political activist and a founding member of Social Democrats, USA. He supported democracy and labor unions in the USA and internationally, and so was active in the civil rights movement, the labor movement, and the social-democratic opposition to communism. He founded organizations including and Frontlash, and he served as director of the Committee for Democracy in Central America. Kemble was appointed to various government boards and institutions throughout the 1990s, eventually becoming the Acting Director of the U.S. Information Agency under President Bill Clinton.