This article reviews empirical studies of social support and sexual assault in order to evaluate the empirical evidence for the role of support in recovery from mental health and physical health consequences of this crime. Evidence is mixed with regard to the effect of social support, with some studies showing no significant effect and others showing positive effects of support on postassault recovery. Negative aspects of social relations (e.g, negative social reactions), while less studied, show consistent and strong negative effects on sexual assault victims. Factors that may modify the relationship of support and sexual assault outcomes are reviewed, including: assault characteristics, specific support provider factors, victim coping and functioning, preassault support network, and other postassault experiences, such as criminal justice system involvement. Limitations of existing research are noted. Suggestions for future research on the relationship of social support and sequelae of sexual assault are provided, with a focus on development of support network interventions for victims. (C) 1999 Elsevier Science Ltd. All rights reserved.