Background: COVID-19 pandemic is attacking the world as in a war that produced a larger number of deaths and patients. Health care providers including nurse interns are considered soldiers in that war, so they shouldn't be afraid when facing any pandemic. Aim: This study aims to evaluate the effect of online training program on fear and coping strategies among Nurse interns' during COVID-19 pandemic Methods: A quasi-experimental one-group pretest-posttest design was conducted in this study. Subjects: A convenience sample 170 of nurse interns' who trained at Ain shams University hospitals. Tools: Data for this study were collected by using three tools, namely: nurse interns' knowledge, practice, and attitude concerning COVID-19, multidimensional fear of COVID-19 scale and Coping strategies scale. Results: This study revealed that nurse interns' knowledge, practice, and attitude regard COVID-19 at the post- and follow- up intervention was improved. Also, the nurse interns' COVID-19 fear at the post- and follow- up intervention was reduced. Hence, their coping strategies at the post- and follow- up intervention was improved. Conclusion: there was positive strong statistically significant correlation between knowledge, practice, attitude, total fear of COVID 19 and coping strategies scores after training program, and the effectiveness of COVID 19 training program had been achieved in reducing nurse interns' COVID-19 fear and improve knowledge, practice, attitude, and coping strategies. Recommendations: Continuous and recurrent training programs be conducted during internship training to reduce COVID-19 fear and how to cope effectively.