Toni Carr (also, Joan of Dark) is an American author, musician, and textile artist.
Carr is a member of the Naptown Roller Girls, a roller derby team based in Indianapolis, Indiana. In August 2008, Carr wrote a book titled Knockdown Knits, that combined roller derby and knitting. In February 2012, Carr published Knits for Nerds, a knitting book for fans of science fiction, fantasy, and other geeky things. She was formerly a bass player in the indie rock group Chuck Marten.