The increasing number of elderly people in Indonesia also increases the risk of degenerative diseases. In the elderly, it will bring about a complete change in their physique related to the decreased ability of body tissues, especially in physiological functions in the musculoskeletal and neurological systems. This study aimed to determine the effectiveness of Yoga exercise on increasing muscle strength in the elderly. This type of research is experimental. The population was all elderly Tresna Wreda Budhi Dharma Sleman Nursing Homes, Special Region of Yogyakarta, totaling 20 people with criteria above 60 years. Measuring lower body strength using a 30-second chair stand test. Yoga exercises were carried out for 16 meetings. The results showed that yoga exercise for 16 sessions effectively increased muscle strength in the elderly, with an increase of 12.5%. Suggestions that can be submitted based on the study in this study are yoga exercise training can be used as an option in muscle strength training for the elderly to improve muscle strength and maintain the ability to carry out daily activities; it is expected to be used as a reference for further researchers to conduct research with cases others in dealing with physical problems in the elderly.