This report covers the technical details, data collection and methodology of the Australian component of the 2004 International Crime Victimisation Survey (ICVS). The ICVS is designed to provide estimates of criminal victimisation for selected crimes and public perceptions of crime, and to make international comparisons using a common questionnaire across participating countries. It also provides details about the nature of these crimes and their outcomes, including reporting to the police. The sample for the Australian component of the 2004 ICVS consisted of a random national sample of 6000 respondents and a booster sample of 1001 migrants from Vietnam and the Middle East. The report covers the content of the questionnaire used; sample design and selection; an analysis of the sample; survey weights; and a comparison with the 2000 ICVS. The questionnaire itself is included as an appendix.