Background: Child maltreatment (CM) and intimate partner violence (IPV) can have far-reaching consequences to the psychological and physical health of victims. While multiple evidence syntheses support this, they are typically limited by a narrow outcome focus, the inclusion of non-causal study designs, and a lack of indication of the true clinical impact of family violence. Methods: This umbrella review of meta-analyses included prospective or longitudinal primary studies examining the long-term consequences of CM and IPV. We searched five databases (PsycInfo, PubMed, Web of Science, Cochrane Library, Proquest), from inception to Jun 12, 2023. We critically appraised the included meta-analyses on their methodological quality using the Assessment of Multiple Systematic Reviews tool, and assessed the quality of evidence for each outcome on five additional factors. We calculated ORs by family victimisation type and outcome, and population attributable fractions (PAFs) to estimate the reduction of impact if family violence was eliminated. This study is registered with PROSPERO, CRD42023445072. Findings: We screened 4,284 records and identified a total of 18 meta-analyses. A total of 27 pooled effect sizes were extracted, covering 19 distinct long-term outcomes related to CM and IPV. CM and IPV were significantly linked to 16 out of the 19 adverse psychiatric, psychosocial, and physical health outcomes. ORs ranged from 1.04 [95% CI 0.99, 1.10] to 2.70 [95% CI 2.10, 3.47] with a median OR of 1.73. For CM, the strongest association was found with anxiety (OR = 2.70 [95% CI 2.10, 3.47]), and for IPV with hard drug use (OR = 2.05 [95% CI 1.19, 3.52]). While the methodological quality was moderate to high across all included meta-analyses, the quality of evidence was generally lower. PAFs ranged from 0.9% to 25.6%, indicating that up to a quarter of cases of some psychiatric disorders can be attributed to family violence victimisation. Interpretation: Family victimisation is clearly linked to a multitude of psychiatric and physical health consequences, yet the magnitude of impact varies by type of violence and outcome. High-quality research on the specific mechanisms underlying this long-term relationship is needed to gain a deeper understanding on effective intervention strategies.