EMERGENCY PASSPORT
If your passport has been lost or stolen, and your travel is imminent, please contact BuenosAires-ACS@state.gov providing a scanned copy of your airline ticket, a copy of your ID (if available), and a copy of the police report (if available). Be prepared to contact your airline to reschedule flights. Please, note that failure to renew a passport in a timely manner prior to your travel is not an emergency service, and you will need a regular appointment to receive a new passport.
For all non-emergency matters schedule an appointment online.