Introduction: Alzheimer's disease (AD) is the most ordinary reason of dementia in old population. AD is a permanent and progressive brain disorder that gradually deteriorates memory and speaking skills, and eventually leads to disability to accomplish the effortless skills. In this disease, the brain cells are gradually destroyed and as a result, the patients suffer from amnesia. Definitive treatment for AD has not been found yet and enormous efforts have been made to find novel and effective therapies. The stem cells are undifferentiated cells that have a potential to differentiate into many different cell types. Several studies revealed that neurons and glial cells have successfully been differentiated from various stem cells, such as neural, embryonic, and mesenchymal stem cells. Cell therapy is a potential novel therapeutic strategies for treatment of AD. Conclusion: Successful stem cell therapy in animal models of AD points to a potential therapeutic approach in patients with AD.