This study aimed to develop a self-efficacy measure for mindfulness meditation practice (Self-efficacy for Mindfulness Meditation Practice scale). The scale was developed through a process of expert consensus, cognitive interviewing, and evaluation among 199 mindfulness meditation practitioners who completed an online survey. The 9-item Self-efficacy for Mindfulness Meditation Practice scale was unidimensional with three subconstructs of attention, compassion, and emotion. The omega hierarchical coefficient for the total scale was 0.78, and test-retest reliability was intraclass correlation coefficient = 0.85 (95% confidence interval: 0.80, 0.89). This study provides preliminary evidence that Self-Efficacy for Mindfulness Meditation Practice scale is a reliable and valid measure of self-efficacy for mindfulness meditation practice.