Abstract: This study includes the adaptation of the 6-item UCLA Loneliness Scale developed by Wongpakaran et al. (2020) to the Turkish language and the findings of its reliability and validity values. The study was conducted with the data obtained from the study group (n=327) including university students. As a result of the analyzes, it was determined that the scale showed a single-factor structure in accordance with its original structure. Furthermore, the criterion validity of the scale is also computed using the UCLA Loneliness Scale V3. The reliability of the scale was computed by Cronbach's alpha coefficient technique and it was found to be 84. Findings have shown that Turkish adaptation of the 6-item UCLA Loneliness Scale is a reliable and valid instrument that can be used in measuring loneliness in Turkey. Keywords: loneliness, scale adaptation, validity, reliability