INTRODUCTION: The first personnel to care for patients in the triage area are nurses. The emergency nurses' expertise and experience are very important in making the right choices. Triage nurses must be capable of making the right decision quickly and frequently in challenging circumstances. Many studies found that nurses working in emergency rooms have insufficient knowledge & skills of triaging the patients. Assisting them in the development of effective nontechnical skills, practicing infrequent emergency situations, and presenting a variety of real lifethreatening events, simulation-based educational interventions in nursing can train both new and experienced nurses. AIM: To evaluate the effectiveness of simulation based educational package on the knowledge and skills regarding triaging among nurses of selected hospital, Gurugram (Haryana). MATERIAL &METHOD: A Quantitative research approach and Pre- experimental research design was used for the study. The sample for the study was 60 Nurses working in Emergency, ICU, and Wards of SGT Hospital were selected using convenient sampling techniques. .A self- administered questionnaire and checklist was used to assess knowledge and skills of nurses regarding triaging before and after giving simulation based educational package. RESULT: The study revealed that out of 60 respondents, the mean pre-test knowledge score of the nurses was 10.46± 1.55 SD which increased to 14.73 ± 1.62 SD in the post-test and the difference in mean score was highly significant at p<0.05.The mean skills score of nurses improved in posttest 4.20 ± 0.776 SD as compared to pre-test skills score 2.78 ± 1.09 SD, which was highly significant at p<0.05.There was no significant association between post-test knowledge & skills regarding triaging with demographic variables expect for gender with skills. CONCLUSION: The majority of the nurses were not much aware of triaging and this study showed the effectiveness of the simulation based educational package on triaging. Hence, simulation based training program in a regular period will help in gaining knowledge & improving skills regarding triaging among nurses.