The effect of Reablement, a multi-faceted intervention is unclear, specifically, which interventions improve outcomes. This Systematic Review evaluates randomised controlled trials (RCTs) describing Reablement investigating the population, interventions, who delivered them, the effect and sustainability of outcomes. Database search from inception to August 2021 included AMED, ASSIA, BNI, CINHALL, EMBASE, HMIC, MEDLINE, PUBMED, PsycINFO, Google Scholar, Web of Science, . Two researchers undertook data collection and quality assessment, following the PRISMA (2020) statement. They measured effect by changed primary or secondary outcomes: no ongoing service, functional ability, quality of life and mobility. The reviewers reported the analysis narratively, due to heterogeneity of outcome measures, strengthened by the SWiM reporting guideline. The search criteria resulted in eight international studies, five studies had a risk of bias limitations in either design or method. Ongoing service requirement decreased in five studies, with improved effect at 3 months shown in studies with occupational therapist involvement. Functional ability increased statistically in four studies at 3 months. Increase in quality of life was statistically significant in three studies, at 6 and 7 months. None of the studies reported a statistically significant improvement in functional mobility. Reablement is effective in the context of Health and Social Care. The outcomes were sustained at 3 months, with less sustainability at 6 months. There was no statistical result for the professional role regarding assessment, delivery and evaluation of interventions, and further research is justified.