Abstract Background Both hypertension and osteoporosis are common in older adults and frequently co-exist. The renin angiotensin system has been implicated in osteoclast activation and bone loss. Several studies have previously examined the relationship between various inhibitors of RAS and bone mineral density (BMD). In this study we examined the relationship between angiotensin receptor blockers (ARBs) and angiotensin converting enzyme ACE inhibitors and BMD. Methods Study participants were from a cross-sectional study of adults aged >60 years; Trinity Ulster University Department of Agriculture (TUDA) study. We excluded participants on treatments for osteoporosis. In users and non-users of ARBs and ACE inhibitors, we compared least squares means BMD measured by densitometry at the neck of femur, hip, and lumbar spine adjusted for age, sex, body mass index, timed up and go, vitamin D, parathyroid hormone, eGFR, diabetes mellitus, smoking, alcohol consumption, dairy intake, glucocorticoid exposure, thiazide, and loop diuretic use. Results There were 2218 participants (mean age 70.1±6.5 years, 58.3% female, 23.4% (n=519) on ARBs and 30.9% (n=686) on ACE inhibitors). In both univariate and multivariate analysis, ARB users had higher BMD than non-users were associated with higher BMD at the neck of femur (0.860 g/cm² vs. 0.846 g/cm², p=0.016); at the total hip, (0.938 g/cm² vs. 0.919 g/cm², p=0.004); at the lumbar spine, BMD was 1.106 g/cm² vs. 1.074 g/cm² p< 0.001). No significant relationship between ACE inhibitors and BMD at any site was observed after multivariate adjustment. Conclusion ARBs were associated with improved BMD while ACE inhibitors were not. Similar results have been found in other studies but the mechanisms but there is substantial uncertainty regarding the mechanisms underlying these relationships. These findings could be important in the choice of antihypertensive agent in older patients at risk of fracture and further research is warranted.