This study aimed to explore latent groups based on socially prescribed perfectionism(SPP), grit, individual-oriented and social-oriented achievement motivation(IOAM and SOAM), and perceived social support, and examine differences in mental well-being and academic adaptation. An online self-report survey was conducted with 400 university students aged 19-25. Latent profile analysis revealed four latent groups: ‘general type(44.8%)’, ‘adaptive non-perfectionism type(15.9%)’, ‘low-resource vulnerable type(14.7%)’, and ‘adaptive perfectionism type(24.6%)’. Analysis of outcome variables across latent profiles showed that higher levels of grit, IOAM, and perceived social support were associated with better overall well-being and academic adaptation. Notably, the ‘adaptive perfectionism type’ showed significantly higher social well-being than the ‘adaptive non-perfectionism type’, while the ‘low-resource vulnerable type’ had significantly lower psychological well-being than the ‘general type’. These results suggest that SPP can positively function for social well-being among Korean university students in a collectivistic culture, and that grit, IOAM, and perceived social support can serve as protective factors.