<![CDATA[Mindfulness is an important construct in psychology, counseling, education, and mental health research. However, concise Indonesian instruments for assessing mindfulness as a multidimensional construct remain limited. This study examined the psychometric properties of the Indonesian version of the Five Facet Mindfulness Questionnaire–Short Form (FFMQ-SF). A quantitative psychometric validation design involved 387 students from Universitas Riau, Indonesia. The adaptation process included translation, synthesis, back-translation, expert review, and pre-testing. Data were analyzed using descriptive statistics, the Kaiser-Meyer-Olkin measure, Bartlett’s test of sphericity, confirmatory factor analysis, standardized factor loadings, average variance extracted, Cronbach’s alpha, and McDonald’s omega. The findings supported the five-factor structure of the Indonesian FFMQ-SF: observing, describing, acting with awareness, nonjudging of inner experience, and nonreactivity to inner experience. CFA showed acceptable model fit, with CFI = .918, TLI = .904, RMSEA = .050, and SRMR = .073. Standardized factor loadings ranged from .477 to .862. Reliability was acceptable for the total scale (ω = .792, α = .770) and most facets (ω = .681–.867). However, AVE values for describing, acting with awareness, and nonreactivity were below .50, indicating limited convergent validity. The Indonesian FFMQ-SF appears promising for assessing mindfulness among Indonesian university students. Keywords: FFMQ-SF; Indonesian adaptation; Mindfulness; Psychometric properties; University students]]>
