The aim of this study is to examine the level of sleep quality and quality of life, and to investigate the relationship between sleep quality, mindfulness and quality of life among undergraduate students. Crosssectional study design was implemented. The Pittsburgh Sleep Quality Index (PSQI), the Mindful Attention Awareness Scale (MAAS) and the Quality-of-Life Enjoyment and Satisfaction Questionnaire (Q-LES-Q) were used in this study. A total of 139 undergraduate students from a public university in Malaysia have participated in this study. Correlation analysis was used to analyse the data. Results showed that there was a significant relationship between mindfulness and all domains of quality of life particularly satisfaction with feelings, social relations and physical health. Meanwhile, sleep quality was also found to be significantly related with quality of physical health and feelings. Nonetheless, no significant relationship was found between sleep quality and satisfaction with social relations. The obtained findings implied that practising mindfulness significantly increases undergraduate students’ quality of life especially for the aspects of physical health, emotions and social relations. Implications of the findings were discussed.

Keywords : Sleep Quality; Mindfulness; Quality of Life; Undergraduate Students.