This report presents findings from a secondary analysis of four waves of the Cambodia Demographic and Health Surveys, 2000 to 2014, with support from the United Nations Population Fund (UNFPA) and Australian in Cambodia. One aim of this report was to describe the current state of the sexual and reproductive health of adolescents and youth in Cambodia and this was achieved through the analysis of data on young women aged 15-24 years from the four Cambodian Demographic and Health Surveys (CDHS) conducted in 2000, 2005, 2010 and 2014. Descriptive analyses of key areas of sexual and reproductive health; namely marriage and sexual behaviour, family planning and contraceptive use, adolescent pregnancy and motherhood, knowledge of HIV and AIDS, and the occurrence of symptoms of sexually transmitted infections (STIs); allowed trends over a fifteen year period to be examined.