This daily diary study investigated the interplay of perceived friend and parent support in adolescents' everyday lives. Specifically, we tested the interactive effects of friend and parent support on adolescent well-being at both the intra- and inter-individual level. A diverse sample of 119 adolescents (M age=15.36) completed diary reports for two weeks. Multivariate multilevel models demonstrated that on days adolescents felt more supported by their friends or parents, they experienced increases in their happiness and social connectedness. Additionally, parent support emerged as a protective factor for youth lacking friend support, although patterns differed at the intra- versus inter-individual level. The findings underscore the dynamic nature of social support in adolescents' daily lives and highlight the interactive roles of friends and parents in promoting youth well-being.