In order to update the name and/or gender on a Mississippi ID, the applicant must submit in person documents demonstrating the name and/or gender change, such as a birth certificate or court order. The Mississippi Department of Public Safety addresses name change here.
As of November 1, 2021, the Mississippi Driver Service Bureau will change the gender marker on a driver's license or state ID upon receipt of a completed Gender Designation Form. This form must be filled out and signed by the applicant and by a physician, therapist, psychiatrist, psychologist, or social worker.