Multiple sclerosis (MS) is a chronic, neurodegenerative disease of the central nervous system with unknown etiology mostly affecting young adults with mean age of 30 years, twice as high in women compared to men. The symptoms of MS, such as weakness, sensory loss, and ataxia, which are directly related to demyelination and axonal loss, along with other symptoms such as reactive depression or social isolation, can result in functional limitations, disability and reduced quality of life (QoL). QoL assessments in patients with a chronic disease may contribute to improving treatment and could even be of prognostic value. The goals of this study were to assess the QoL among Iraqi patients with relapsing remitting multiple sclerosis(RRMS), using one of three different disease modifying therapies(DMTs) administered orally, subcutaneously, and by slow infusion; namely, fingolimod, IFN?-1b, and natalizumab, respectively. And to assess the role of certain predictors on QoL. Functional Assessment of Multiple Sclerosis (FAMS) questionnaire version 4 was used to assess QoL. Sociodemographic and clinical characteristics were tested by univariate and multivariate regression analysis to assess the contribution of these predictors to QoL. No significant differences were found in Symptoms, Thinking/fatigue subscales and FAMS total scores. In conclusions: Iraqi MS patients using IFN?-1b, fingolimod or natalizumab have a comparable low level of QoL. The expanded disability status scale (EDSS) is negatively associated with QoL of MS patients in all of the three therapies, while other predictors such as occupational status, educational status, smoking habit and MS duration have different impact in different treatments.