Sexually transmitted infections (STIs) are a public health crisis that can be devastating to individuals with adverse childhood experiences (ACEs). This study examined the prevalence and association between ACEs and self-reported STIs among adolescents and young adults in Zimbabwe. Data for this study was derived from the 2017 Zimbabwe Violence Against Children Survey (ZVACS) from the participants aged 13 to 24 (n=504). The self-reported prevalence estimates of STIs were calculated using weighted frequencies and percentages. Two logistic regression models were employed to assess an association between eight ACE types and self-reported STIs. The findings revealed that STIs were higher among orphans (52.2%), followed by participants with a history of lifetime suicide ideation or attempts (49.8%), were exposed to any ACE (42.5%), and had moderate/severe mental distress in the past 30 days (44.8%). Additionally, self-reported STI rates were higher for participants who experienced any form of physical violence (30.8%), witnessed physical violence (22.4%), experienced sexual violence (16.1%) and emotional violence (11.7%). In unadjusted regression models, all ACEs, except participants who experienced emotional violence, were significantly associated with self-reported STIs. However, after adjusting for covariates in the model, none of the ACEs maintained a significant association with self-reported STIs. Despite this, it is evident that interventions remain crucial for effectively preventing STIs for individuals with ACEs. There is a pressing need to implement and expand STI prevention programs nationally, including identifying and addressing ACEs and early screening, diagnosis, and treatment of STIs among adolescents and young adults in Zimbabwe. Keywords: Adverse childhood experiences (ACEs), Adolescents, sexually transmitted infections (STIs), Violence, Young adults, Zimbabwe.