Kelsian Group Limited is a diversified passenger transport and tourism services company headquartered in Adelaide, Australia. Its primary function is operating public transportation networks, including bus services, across Australia, Singapore, and the United Kingdom, usually on behalf of government entities. In addition to public transit, Kelsian serves the private sector by providing commuter transport for resource companies, corporates, and educational institutions, with some operations extending to the United States. The group is also a significant player in marine transportation, offering ferry services, leisure cruises, and a range of tourism-related activities such as bus tours, accommodation, and packaged holiday experiences, mainly throughout Australia. Founded in 1989, Kelsian Group has evolved from its roots in marine transport to become an integrated mobility provider, impacting the broader travel, commuter, and tourism sectors. Its diverse service portfolio positions Kelsian as a vital link in both local and international transport networks, making it a key participant in the movement of people for work, leisure, and tourism.