|Generally, ports represent a significant national infrastructure to ensure speedy and seamless transportation of import and export cargoes. For instance, 99.7% of the volume of import and export cargoes in Korea has been handled by maritime transportation. The port logistics industry plays a significant role in the regional economic development of Korea by generating added value and employment. As of late, the Korean Ministry of Oceans and Fisheries formulates the port policy for developing specialized ports in harmony with the change of regional industries. Especially, the port logistics industry should be developed with regard to the relationship with regional linked industries. Such situation drives the need for an analysis of the regional economic impacts of the port logistics industry. Thus, this study attempts to explore the regional economic impacts of the port logistics industry using regional input-output (I-O) analysis focused on Busan, Incheon, and Ulsan. We use the original benchmark 2013 regional I-O tables obtained from the Bank of Korea. For port logistics-based analysis, original tables are aggregated into 4-region and 31-sector tables. Specifically, production, value-added, and employment inducing effects, as well as net trade in value-added are intimately presented. The analysis results reveal that the production inducing effects of the regional port logistics industry range from 1.7730 to 1.9783. Given that 65% of induced effects of logistics industry in Ulsan are generated from industries in this location, the industry is likely to be very dependent on industries in other regions. "Port logistics," "petroleum and coal products," "business support services," "electricity, gas, and steam supply," and "wholesale and retail trade" rank high in the sectoral inducing effects of port logistics. With regard to net trade in value-added, port logistics industries in Busan and Incheon generated positive values respectively, but the industry in Ulsan showed the opposite sign. It should be noted that net trade in value-added allows researchers to capture added values transferred during the production process contrary to value-added inducing effects. Analysis results will offer valuable information on the regional economic importance of port logistics industry for building the master development plan on nationwide ports. Especially, net trade in value-added will serve as a new indicator for describing the industrial status of the regional port logistics industry. In addition, this study can be applied to the design of efficient strategies for constructing the regional port logistics clusters. The sectoral linkages in a regional economy can provide the framework for identifying leading industries in the regional economy and for grouping the industries into spatial clusters. In light of academic research, introducing net trade in value-added using I-O analysis to the port logistics field for the first time will significantly contribute to expanding the range of the port logistics research. We expect this study to motivate future research with respect to the economic impacts of port logistics industry.