Background/Objectives: This systematic review aimed to determine the effects of resistance training on cognitive and motor function in older adults diagnosed with Alzheimer’s disease (AD). Methods: The review followed PRISMA guidelines. A comprehensive search strategy was applied across MEDLINE (OVID), SCOPUS, Web of Science, LILACS, and the Cochrane Central Register of Controlled Trials (CENTRAL). The included studies were experimental, quasi-experimental, cohort, case–control, and cross-sectional designs. Exclusion criteria included studies in animals, pediatric populations, individuals with other types of dementia, Down syndrome, or other neurodegenerative diseases. Conclusions: Resistance training appears to exert beneficial effects on both motor and cognitive functions in older adults with AD. However, the development of standardized, individualized exercise protocols is essential to optimize therapeutic outcomes