Unita Zelma Blackwell (March 18, 1933 – May 13, 2019) was an American civil rights activist who was the first African-American woman to be elected mayor in the U.S. state of Mississippi. Blackwell was a project director for the Student Nonviolent Coordinating Committee (SNCC) and helped organize voter drives for African Americans across Mississippi. She was also a founder of the US–China Peoples Friendship Association, a group dedicated to promoting cultural exchange between the United States and China. She also served as an advisor to 6 US Presidents: Lyndon Johnson, Richard Nixon, Jimmy Carter, Ronald Reagan, and Bill Clinton.