Amending the sex designation on a birth certificate may be an extremely important step for a transgender person, to accurately reflect on this legal document the sex with which the individual identifies, and as required proof of sex to obtain other identity and legal documents. The requirements and process to change the sex designation on a birth certificate, and whether that is even possible, varies from state to state. The following is a list of legal authorities intended to assist with the process of changing the sex on a birth certificate.