Back ground: Workplace bullying is a social and organizational problem within the health care, it has several adverse effects and closely associated with nurses' work engagement. Aim: The study aimed to assess the effect of workplace bullying on nurses' work engagement. Research Design: Descriptive correlational research design was used in the study. Setting: the study was conducted at EL-Menshawy Hospital, which affiliated to the Ministry of Health and Population. The study subjects: Consisted of a represented sample of staff nurses (n= 250). Tools: Data was collected by using two tools. 1) workplace bullying questionnaire; 2) nurses' work engagement questionnaire. Results: The result showed that majority of staff nurses had high level of bullying and more than two-fifths of the staff nurses had low level of work engagement. Conclusion: There was statistically significant correlation between nurses' bullying and their engagement. Recommendation: As bullying seems to be a serious problem among staff nurses at EL-Menshawy Hospital, Nurses at all levels, Nursing administrators need to develop policies to prevent bullying and setting up mechanisms that allow nurses who exposed to workplace bullying to report incidents of bullying.