Hazel M. Erby (September 22, 1945 – July 2, 2021) was an American politician who was a Democratic member of the St. Louis County Council. In 2004, she became the first Black woman on the council and then represented the first district from 2004 to 2019. In 2009, she became the first Black woman to chair the council. In 2019, became the first Director of Diversity and Inclusion in St. Louis County.