Background: The risk of interne addiction among students from age 18-24 was increasing in many countries now a day. Although the internet is useful tool, internet addiction was associated with physiological and physical problem. The aim of this study was to assess the relationship between level of internet addiction, loneliness, and life satisfaction among Health and Rehabilitation Science. Descriptive correlational design was used to achieve this aim. This study was done by students at Princess Nourah University in Riyadh. Multistage cluster sampling was utilized to determine the size of sample which was 180 female students. Three tools for data collection were used: standardized scales of Internet Addiction Scale (IAS) UCLA Loneliness Scale (ULS) and Satisfaction with Life Scale (SWLS).  The result revealed that most of the participants were non-addicted to internet, had a moderate level of feeling of loneliness that were highly satisfied about their life. Based on this result it was conclude that there is no relationship between internet addiction, loneliness and life satisfaction (p>0.01). It is recommended to broad the population for increasing the generalizability of the results to all Saudi population.