This study addresses the pervasive human experience of loneliness, shifting from a traditional unidimensional perspective to a more nuanced, multidimensional understanding. The Social and Emotional Loneliness Scale for Adults (SELSA) was developed based on this conceptual shift, and this study focuses on adapting the scale to Turkish culture. Data from 197 Turkish adults (Mean age = 23 years, SD = 5.12) were analyzed using exploratory factor analysis, revealing a three-factor structure consistent with the original scale. The factors, namely social loneliness, romantic loneliness, and family loneliness, explained 23.7%, 17.5%, and 10.4% of the variance, respectively. One item was excluded from the scale due to the lack of contribution to any factor. Clear factor analysis results and high Cronbach’s alpha reliability coefficients (0.92, 0.93, and 0.90 for social, romantic, and family loneliness, respectively, and 0.90 for the total scale) indicate strong internal consistency. The findings not only affirm the applicability of SELSA in the Turkish context but also contribute to a nuanced understanding of loneliness. The multidimensional approach, supported by robust psychometric properties, offers a valuable tool for comprehensively assessing and addressing diverse facets of loneliness in Turkish young adults.