en پرستاری Nursing پژوهشي Original Research Articles <div style="text-align: justify;"><strong>Objectives</strong>: The internet is known as an essential part of individuals&rsquo; daily life. The present descriptive research aimed to determine the prevalence rate of Internet Addiction (IA) and its related factors in Iran.<br> <strong>Methods</strong>: In total, 1046 internet users were recruited by a convenience sampling approach. The required data were collected by an online questionnaire, including a sociodemographic data scale and the Persian version of the Internet Addiction test. The obtained data were analyzed using SPSS.&nbsp;<br> <strong>Results</strong>: The current study findings indicated that the prevalence rate of IA was equal to 57.6%.The highest prevalence rate belonged to the research participants aged &le;35 years (67.5%), followed by females (61.5%), married subjects (66.7%), the holders of MSc and PhD. degrees (65.8%), and those employed in public sectors (68.5%). The highest prevalence of IA was detected among the study participants who spent one hour daily on the internet (94.7%); however, the lowest prevalence of the IA was observed among those who spent >10 hours daily on the internet (16.4%). Moreover, there was no dramatic difference between the internet access source and the IA among the research participants (P˃0.05). There was a significant relationship between all determined variables and the level of IA (P˂0.05).&nbsp;<br> <strong>Discussion</strong>: The prevalence of IA was increasing in the studied population. Health educators are recommended to emphasize improving society&rsquo;s awareness of IA. They are also suggested to develop educational preventive measures on increasing media health literacy approaches.</div> Addiction, Internet addiction, Prevalence 163 170 http://irj.uswr.ac.ir/browse.php?a_code=A-10-934-1&slc_lang=en&sid=1 Saeed Yarahmadi saeed.yarahmady@gmail.com 0000-0002-8277-6464 No Department of Health Education, School of Public Health, Zanjan University of Medical Sciences, Zanjan, Iran. Fatemeh Zarei f.zarei@modares.ac.ir 0000-0003-1561-3646 Yes Department Health Education, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran. Afsaneh Sadooghiasl asadooghi@modares.ac.ir 0000-0002-4756-2428 No Department of Nursing Education, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran. Sookyung Jeong sookyung7424@wku.ac.kr 0000-0002-1802-8672 No Department of Nursing, Wonkwang University, Iksan City, Jeonbuk, South Korea.