Maternal influences on adolescents' sexual initiation have been examined over two time points in 433 Asian American-Pacific Islander (AAPI) adolescents in a secondary analysis of the Add Health data set using structural equation modeling. A longitudinal model built on a preliminary qualitative study is used to examine the fit between data and model. Maternal perceived connectedness and adolescents' perceived maternal sexual expectations in sexual timing are found to be protective for delaying AAPI adolescents' sexual initiation. Unexpectedly, mothers' perceptions of sexual discussion are not protective for delaying adolescents' sexual initiation. The results suggest interventions should focus on promoting AAPI mothers' perceptions of connectedness with their adolescents and adolescents' perceptions of their mothers' sexual expectations (as measured by adolescents' perceived maternal disapproval attitudes and affects) in delaying sexual initiation. (Contains 2 figures and 3 tables.)