What would you do if your US passport is lost or stolen? If overseas, you would contact the nearest US Embassy. You will often need a police report. If in the US, your need to report it lost or stolen and then apply for a replacement passport. You may call 877.487.2778 or 202.501.4444 for assistance. It is a good practice to carry a copy of your passport (and driver’s license) with you while traveling. You could also scan your passport and email a copy to yourself so that you can access it while traveling.