Abstract.Patient safety is one of the important efforts to guarantee and improve hospital quality.However, there are still patient safety incidents in several hospitals in Surabaya, both government and private hospitals.Based on patient safety incident reports, hospital X (private hospital) still has a high number of patient safety incidents in the last three years. It shows that the performance of patient safety in hospital X is still not optimal. The purpose of this study is to analyze the correlation between organizational communication climate and teamwork to patient safety incidents in hospital X. This research is an analytic study with a cross-sectional design conducted in a private hospital in Surabaya. There are 77 respondents from 21 work units as the sample of this study, where the population is 378 respondents from 21 work units. The results of this study indicate the influence of organizational communication climate and teamwork on the implementation of patient safety efforts. Wellorganized organizational communication climate and teamwork in the hospitals can reduce the number of patient safety incidents and improve the patient safety culture.Therefore,this study concludes that there is a correlation between organizational communication climate and teamwork onpatient safety incidents.