Abstract: Aquatic therapy (AT) has been used for decades to provide physical therapy for patients with lower extremity deformities. Recently, investigators also have shown potential benefits for patients with neurological conditions, such as balance disorders, Parkinson’s disease, and post-stroke effects. This case report documents a patient with severe Alzheimer’s disease who responded well to Halliwick-concept AT, and both subjective and objective evidence is presented to document his improvement. This case suggests a need to further investigate the potential of AT to improve the quality of life of patients with dementia. Key words: Aquatic therapy, Alzheimer’s disease, dementia, activities of daily living. Citation: Annals of Long-Term Care: Clinical Care and Aging. 2013;21(5):36-41.