This report presents findings on nonfatal stalking victimization in the U.S., based on the largest data collection of such behavior to date. Data were collected in a supplement to the National Crime Victimization Survey (NCVS) and sponsored by the Office on Violence Against Women (OVW). Topics covered in the report are stalking and harassment prevalence rates by demographic characteristics, offender characteristics, victim-offender relationship, duration of stalking, cyberstalking, protection measures, and emotional impact. The report also includes data on whether victim sought help from others, involvement of a weapon, injuries, other crimes perpetrated by the stalker, and response by the criminal justice system.