<p>This study examined the psychometric properties and factorial structure of the Arabic version of the Satisfaction with Life Scale (SWLS) in a Kuwaiti convenience sample of Arabic-speaking participants (<i>N</i> = 1,162). The study evaluated whether the Arabic SWLS is best represented as a unidimensional measure or whether alternative specifications, including a two-factor present/past model, provide a better fit to the data. Exploratory factor analysis suggested a modest preference for a two-factor solution. However, confirmatory factor analyses showed that a modified unidimensional model, incorporating residual covariances between Items 1 and 3 and between Items 4 and 5, provided the best overall fit. Bootstrapped estimates supported the stability of these local dependencies. This model outperformed both the original unidimensional model and the two-factor model, supporting the practical use of a unidimensional total score while acknowledging minor local dependencies. Measurement invariance analyses supported configural, metric, and scalar invariance across gender, indicating that comparisons between men and women are interpretable within this sample. Evidence for invariance across the three age strata represented in the sample was more limited, suggesting caution in age-stratified comparisons. The Arabic SWLS also demonstrated good internal consistency (α = 0.81) and theoretically coherent associations with external variables: it correlated positively with extraversion and conscientiousness and negatively with neuroticism, depression, anxiety, and stress. Overall, the findings support the Arabic SWLS as a reliable and essentially unidimensional measure of life satisfaction in this sample, while indicating local dependencies that should be interpreted cautiously.</p>