Common buckwheat is widely cultivated worldwide. Due to its bioactive compounds, there are vigorous studies on protein and metabolism. However, there are not many studies using genetic approaches. Especially researches on genetic diversity in common buckwheat germplasm are rare, although it is crucial for breeding better cultivars. Thus, the current study examined the genetic diversity of the randomly selected common buckwheat germplasm found in the Republic of Korea. The results show that there are not many genetic variances among those wild common buckwheat germplasm that were used in the current study. Although it needs to test more number of germplasm, it seems that more diversity is required to be able to breed cultivars for the future.