Dorothy Harriet Eugenia Musuleng Cooper (also known as "D-Mus," September 9, 1930 – June 30, 2009) was a Liberian educator, politician and the first woman to serve as Foreign Minister in Liberia. She was born at Arthington, Liberia and obtained her B.S. and M.S. from College of West Africa and San Francisco State University respectively. She worked as a school teacher between graduation and high school and matriculation in 1964 in San Francisco in 1964, curriculum development in the Ministry of Education, and principal of Cuttington University College. She was an education minister in Charles Taylor's shadow government from 1990–93 in the National Patriotic Reconstruction Assembly Government