The Port of Busan is the largest port in South Korea, located in the city of Busan, South Korea. The Port of Busan was established in 1876 as a small port with strict trading between Korea, China and Japan . It is situated at the mouth of the Nakdong River facing the Tsushima Island of Japan. During the Korean War, Busan was among the few places North Korea did not invade, causing war refugees to flee to the city of Busan. At that time Busan's port was crucial to receive war materials and aid, such as fabrics and processed foods to keep the economy stable. In the 1970s, a rise in the footwear and veneer industries caused factory workers to migrate to Busan, bringing Busan's population from 1.8 million to 3 million.
The Port of Busan continued to grow and by 2003 the port was the fourth largest container port in the world .