Who do you contact to get a copy of your high school diploma in the USA if lost yours?

If you lost your high school diploma, you can contact your high school Registrar or Principal's office to get a copy or replacement. They will provide you with the necessary information and steps for obtaining a duplicate diploma. Some schools may have online portals where you can request and pay for a replacement. In other cases, you may need to visit the school in person and fill out a request form. The process and fees for obtaining a replacement diploma may vary depending on the school's policies.