Margaret C. "Peg" Snyder (January 30, 1929 – January 26, 2021) was an American social scientist with a special interest in women and economic development, particularly in Africa. She was the founding director of the United Nations Development Fund for Women (UNIFEM), whose name was changed to UN Women in 2011. She was also a co-founder of Women's World Banking and of the African Training and Research Centre for Women.