The Melbourne Gay Community Periodic Survey is a cross-sectional survey of gay and homosexually active men recruited through a range of gay community sites in Melbourne. The project was funded by the Victorian Department of Human Services. The Periodic Survey provides a snapshot of sexual and HIV-related practices among gay and homosexually active men. This survey, the fourth in Melbourne, was administered in February 2002. The current report contains results of that survey and makes comparisons with data from the previous surveys.