Joan Bacchus Maynard (née Cooper; August 29, 1928 − January 22, 2006) was an American artist, author, community organizer, and preservationist.
She was one of the founding members of a late 1960s grassroots group to preserve the legacy of Weeksville, a pre-Civil War African American community in Brooklyn, New York.
Members of the founding grassroots preservation group were Maynard, James Hurley, Dewey Harley, Dolores McCullough, and Patricia Johnson.
Maynard and Gwen Cottman co-authored and published Weeksville, Then & Now: The Search to Discover, the Effort to Preserve, Memories of Self in Brooklyn, New York.
In October 2017, Brooklyn City Councilman Robert Cornegy and Weeksville trustees named a block of Buffalo Avenue in honor the legacy of Maynard.