Abstract : It is being revealed that the advent of technology has remarkably contributed to the development of human society. Advance technology has both sides affecting us either positively or negatively; Nomophobia is a pathological fear of being out of contact with smartphones, having no network, or having insufficient balance or battery. Thus, this study has been conceptualized to investigate gender differences of nomophobia experiences among undergraduate students in Oman. A descriptive correlational and cross-sectional study design was chosen to achieve the research purpose among SQU undergraduate students. The total sample was 578 based on defined inclusion criteria. Nomophobia was identified using a self-report instrument, the Nomophobia Questionnaire, which includes 20 Likert scale items rated from 1 (“strongly disagree”) to 7 (“strongly agree”). 578 participants met the eligibility criteria, the age of the respondents ranged from 18 to 25, and the mean age was approximately 21.0 years. The majority of the participants were female (60.4%), single (94.6%), and lived in-campus (53.1%). The mean score nomophobia was 82.9 indicating a moderate level of nomophobia. Female students reported a higher level of nomophobia compared to males. However, no statistical difference was found among them. This study found a high prevalence of nomophobia in both genders with no statistical differences. More studies should be conducted in this area to address the cultural differences, Emotional intelligence, and social support as another aspect affecting the experiences of nomophobia between both genders