Lost or Stolen Passport
Keep Calm & Carry On
If you find yourself in the unfortunate position of needing to report a lost or stolen passport, contact ISOS. They will direct you to a nearby embassy or consulate to obtain a new one.
For American citizens:
U.S. Embassy Tokyo 1-10-5 Akasaka Minato-ku, Tokyo 107-8420 Japan Phone: 03-3224-5000