Background: The gross anatomy and metrical analysis was carried out in 60 human hearts taken from the cadavers (irrespective of sex and age). The morphological features of coronary sinus were investigated along with study of its metrical analysis. The formation, course, variation in its tributaries and termination to the right atrium were investigated and recorded. Material and Methods: This is morphological study was conducted by utilizing 60 human cadaveric hearts available in the Department of Anatomy, at PMCH Patna. Study duration of Two and half years. Conclusion: The study of Coronary sinus utilizing 60 human hearts (irrespective of age and sex) preserved in formalin showed variations in its formation. The orifice of the Coronary sinus in the right atrium appeared mostly oval in shape and is guarded by semi lunar shaped valve in 59 of specimens and semicircular in one specimen.