The effect of social support has been investigated in numerous studies. Indeed, studies showed that social support is associated with health in many ways. As accepted, structural and functional support are distinct types of social support. The MOS Social Support Survey is an assessment tool that includes items measuring both types of social support. The MOS Social Support Survey was linguistically adapted to Turkish by translation and back-translation process. The study included a pre-test (N = 241) and a post-test (N = 99) conditions with one-month interval. The questionnaire set included a demographic information form, the MOS Social Support Survey, U.C.L.A. Loneliness Scale, Symptom Checklist 90-Revised, Multidimensional Scale of Perceived Social Support, and Inventory of Socially Supportive Behaviors. Factor analysis confirmed the fit of the 4-factor model. While the internal consistency reliability of the whole scale was .96, the test-retest reliability was .73. The internal consistency reliabilities of the subscales ranged between .58 and .73. As an indicator for the divergent validity, the scale was negatively correlated with U.C.L.A Loneliness Scale (r =-.65, p < .01) and SCL-90-Revised (r =-.276, p < .01). For the convergent validity, the MOS Social Support Survey was correlated positively with MSPSS (r = .657, p < .01) and ISSB (r = .404, p < .01). The results of the study indicated that Turkish adaptation of the MOS Social Support Survey has satisfactory reliability and validity values..