The U.S. passport book and passport card are highly secure documents with numerous security features designed to prevent successful counterfeiting. You should only report your U.S. passport lost or stolen if the original, physical version of the passport book or passport card has been lost or stolen. Once you report a U.S. passport lost or stolen, it is invalid and cannot be used for international travel.
To make a report for a lost or stolen passport, please visit https://travel.state.gov/content/travel/en/passports/after/lost-stolen.html or call 877-487-2778 (TTY 888-874-7793).