Studies had reported an increasing trend of coronary artery disease (CAD) cases in the navy population. However, the severity of the CAD among different navy ranks is yet to be studied. The Gensini scoring system is a popular and developed objective method to quantify the CAD severity through the coronary angiographic findings. In this retrospective cross-sectional study, researchers enrolled 171 patients referred to the Indonesian Navy Hospital of Dr. Ramelan who underwent elective coronary angiography between January 2019 and June 2019. Researchers divided the study population into five groups of civilians, enlisted, noncommissioned officers, new commissioned officers and middle-rank officers. Post-hoc least significant difference (LSD) test showed the average Gensini Score of civilian (41.54 ± 48.06) is higher than enlisted (13.37 ± 26.25; p=0.031), new-commissioned officers (13.21 ± 26.76; p=0.020), and middle-rank officers (21.23 ± 33.17; p=0.017), but not for non-commissioned officers (45.61 ± 42.62; p=0.657). Non-commissioned officers have a significantly higher Gensini Score than enlisted (p=0.027), new-commissioned officers (p=0.019) and middle-rank officers (p=0.023). This study concludes that the majority of Indonesian Navy personnel had a lower Gensini Score compared to civilians but not for non-commissioned officers. This study suggests that civilian and non-commissioned officers may have a higher risk of developing severe CAD.