Biodiversity has globally declined because of various drivers, and the loss of biodiversity encroaches ecosystem services resulting in more serious socio-economic and environmental problems in low-income or underdeveloped countries where local livelihood is highly dependent on ecosystem services. Official Development Assistance (ODA) from developed countries may help address the negative drivers of biodiversity loss. However, little researches on ODA related to biodiversity issues in the Republic of Korea are available. This study was conducted to review the current status of ODA related with biodiversity issues provided by Korea. We used ‘Green ODA’ guided by the Korea International Cooperation Agency (KOICA) and ’Creditor Reporting System (CRS)’ code of the Organization for Economic Cooperation and Development (OECD) to identify and analyze biodiversity-related ODAs. As a result, ODAs for biodiversity provided by Korea were belonged to two of five categories of the Green ODA. The total amount of the overall ODAs and Green ODAs have increased steadily since the 2000s. However, the amount of biodiversity-related ODAs had greatly changed over time, and its proportion to overall ODA budgets had remained low. This may be largely because the ODAs for biodiversity had been implemented on a short-term basis, not for systematic long-term projects. In order to meet the global trend for biodiversity conservation, it is necessary to expand the total amount of ODAs for biodiversity, establish long-term plans, and maintain the continuity of biodiversity-related ODA projects.