Seoul Airlines (에어서울; Air Seoul) is a low-cost airline in Korea, founded in 2015, is a subsidiary of the company, mainly engaged in air passenger and cargo business, the hub airport for Incheon International Airport, navigating to Tokyo, Osaka, Nagasaki, Hong Kong, Macau and other cities. The official website of Seoul Airlines is available in simplified Chinese and other languages, providing online ticketing and online check-in functions.

Koryo Marine Transport (KMTC) is a liner company in Korea, established in 1954, mainly engaged in container shipping business. KMTC shipping company's official website is available in multiple languages including Chinese, users can check the company's routes, schedules and container tracking through KMTC's official website.

Busan Gimhae International Airport (Gimhae International Airport) is one of the major international airports in Korea, opened in 1976, located in Busan, is a dual-use airport. The official website of Gimhae International Airport provides multilingual services including simplified Chinese, flight information, traffic/parking information, etc.

Korean Air (English: Korean Air; Korean: 대한항공 주식회사) is the largest airline in Korea and the leading airline in Asia, and is a member of the SkyTeam alliance. Founded in 1962, Korean Air's domestic hub airport is Gimpo Airport and its international hub airport is Incheon International Airport.

Daegu Metropolitan Transit Corporation (대구도시철도공사; Daegu Metropolitan Transit Corporation) is a state-owned corporation in Daegu, South Korea, established in 1995 (Daegu Metropolitan Subway Corporation). It is responsible for the operation and management of lines 1, 2 and 3 of the Daegu Metropolitan Railway.

Jeju Air (제주항공; English: Jeju Air) is an airline located in Jeju Island, Korea, established in January 2005; officially launched in May 2006; the first international route Jeju-Gwangju on July 11, 2008. Its main bases are Jeju Airport (CJU) and Gimpo International Airport (GMP).

Seoul Transit Corporation (서울교통공사; Seoul Metro) is a South Korean railroad company formed in May 2017 by the merger of Seoul Special City Urban Railway Corporation and Seoul Metro. Seoul Transit Corporation is primarily responsible for the operation and management of lines 1 to 8 of the Korea Metropolitan Area Railway.

Busan Transportation Corporation (부산교통공사; Busan Transportation Corporation) is a state-owned enterprise in Korea, established in 1981 (Busan Transportation Corporation) and headquartered in Busan Township, Busan Metropolitan Railway, Busan, and is responsible for the operation and management of lines 1, 2, 3, and 4 of the Busan Metropolitan Railway. It is responsible for the operation and management of Busan Metropolitan Railway lines 1, 2, 3 and 4.

Air Busan (에어부산, Air Busan) is a Korean airline, established in 2007 as a subsidiary, whose hub airport is Gimhae International Airport, with international routes to Qingdao, Xi'an, Zhangjiajie, and Macau.

Incheon Transit Corporation (인천교통공사; Incheon Transit Corporation) is a state-owned enterprise in Korea, headquartered in Nam-dong, Incheon, and is responsible for managing Incheon's urban public transportation system. The Incheon Transit Corporation official website is available in English, Chinese, Japanese and Korean.

Jeju International Airport (제주국제공항; Korean Kanji: Jeju International Airport; English: Jeju International Airport) is the third largest airport in Korea, after Seoul's Gimpo Airport and was founded in 1968 and is located in Jeju City, Jeju Island. In addition, Jeju International Airport has also become the third power of transit between Taiwan and mainland China (after Hong Kong and Macau).

티웨이항공; English: t'way Air) is a well-known Korean low-cost airline located in Seoul, with Korea Tomato Savings Bank as its major shareholder. The airline operates domestic routes mainly to Jeju Island and international routes mainly to Fukuoka Airport in Japan.

Asiana Airlines (아시아나항공. Asiana Airlines is the world's leading airline and has been ranked as a five-star airline by SKYTRAX for four consecutive years. In 2009, the airline was named "Airline of the Year 2009" by ATW, the Nobel Prize in the airline industry, and became the only airline to receive the highest awards from ATW and SKYTRAX for two consecutive years. Asiana Airlines was founded on February 17, 1988 and joined in 2003.

True Air (진에어; English: Jin Air) is a famous Korean low-cost airline, under the umbrella of Korean Air, which started its flight in July 2008. Initially, Jin Air only operated domestic routes, and in 2009 opened up Cebu, Clark, Philippines, Sapporo, Japan, Bangkok, Guam, Hong Kong, Macau, Taiwan and some inland areas of China. The most important feature of True Airlines is that it does not have a seat allocation, i.e., seats are available on a first-come, first-served basis.

Korea National Railroad (KNR, KORAIL) was originally the National Railroad Agency of the Republic of Korea, but was nationalized on January 1, 2005 and is no longer affiliated with the government of the Republic of Korea. The headquarters of the railroad company is located in the East District of Daejeon City, Central Korea, and is mainly responsible for the domestic passenger trains and freight trains of the Republic of Korea, mainly operating lines including the Republic of Korea Railway, high-speed railway and metropolitan area electric railway.