Lisa Valentine claims in the lawsuit filed Tuesday that her free speech rights were violated when she was ordered to serve 10 days in jail for contempt of court in December 2008 after she refused to remove her hijab at a courtroom.
Valentine was released in less than a day.
The lawsuit was filed by the ACLU and the ACLU of Georgia.
Valentine's arrest forced judicial officials to overhaul courtroom policy. The Judicial Council of Georgia in July 2009 voted to allow religious and medical headgear into Georgia courtrooms.