Introduction: Elderly people usually have decreased in muscle mass, muscle strength or physical performance. These disease are known to be sarcopenia. They also would have lost several essential minerals including magnesium. In age-related diseases including sarcopenia, aging and Mg deficiency have been correlated to excessive production of free radicals and low grade inflammation. The purpose of this study is knowing the correlation between serum magnesium with sarcopenia occurence in elderly women. Methods: A cross sectional design observational study was performed on 28 respondents aged 60 years and above by performing serum magnesium test, muscle mass examination, muscle strength examination and physical performance examination. Results: Based on Dual Energy X-ray Absorptiometry (DXA) assessment, gait speed test, and hand grip test, using Asian Working Group Of Sarcopenia (AWGS) algorithm; 11 women were sarcopenia and 17 women were non sarcopenia. This study described higher mean Mg level for sarcopenia group (2.37±0.28 mg/dl) than non sarcopenia group (2.20±0.19 mg/dl). There are no signficant difference in magnesium serum level between samples with sarcopenia and non sarcopenia (p>0,05). Conclusion: The result show that there are no correlation between serum magnesium level with sarcopenia.