Despite extensive research supporting the effectiveness of mindfulness-based interventions, the understanding of the dynamic connections between various mindfulness facets, particularly across diverse cultures, remained limited. This study aimed to investigate the networks among mindfulness aspects across different cultural backgrounds and their individual associations with mental health and well-being. Using the data collected from 710 undergraduate students in Hawaii (445 Asian Americans, 265 European Americans), we constructed sparse networks for each group to investigate their centrality index. To compare the overall structures of these networks, we utilized permutation-based tests. In addition, we used relative weight analysis to evaluate the distinct contributions of each mindfulness facet to positive and negative mental health outcomes. The results indicated similar trends in both racial groups, emphasizing the importance of specific mindfulness aspects like describing and acting with awareness within the mindfulness construct. However, notable variations were observed, particularly in how observing and nonjudging facets related among Asian Americans. In addition, acting with awareness and nonjudging showed substantial inverse associations with negative mental health outcomes across groups, whereas the observing aspect displayed positive connections with anxiety and stress among Asian Americans. The findings suggest which aspects are fundamental to mindfulness, aiding in a nuanced understanding of the construct. They also emphasize the importance of acknowledging cultural diversity in both mindfulness research and its clinical applications. Practical implications and directions for future research were discussed. (PsycInfo Database Record (c) 2024 APA, all rights reserved).