Norms and beliefs toward contraception, both positive and negative, motivate contraceptive use; however, they have seldom been explored longitudinally in low-and middle-income countries, limiting our understanding of their influence on contraceptive dynamics. We used PMA Uganda national longitudinal data of reproductive aged women in (baseline) and (follow-up) to explore discontinuation and switching among modern contraceptive users at baseline (n = ) and contraceptive use at follow-up among nonusers at baseline (n = ,). Multivariable simple and multinomial logistic regressions assessed the association of individual and community-level contraceptive beliefs with contraceptive uptake, discontinuation and switching. Onequarter of nonusers at baseline were using contraception at follow-up, while percent of users at baseline had discontinued and percent had switched methods at followup. The odds of contraceptive uptake were lower among women who strongly agreed that contraception impacted future fertility or caused conflict within a couple, relative to those who strongly disagreed (adjusted odds ratio (aOR): . and aOR: ., respectively), but higher among women who strongly agreed that contraception preserved beauty (aOR: .). Women who strongly agreed that it was acceptable to use contraception before having children were less likely to discontinue their method than those who strongly disagreed (adjusted relative risk ratio (aRRR): .), though living in a community where more women agreed with this statement was associated with higher discontinuation (aRRR: .). Family planning programs that promote positive beliefs toward family planning could improve contraceptive uptake and continuation. More research