The Department of Foreign Affairs and Trade confirmed that the Australians are receiving treatment in Bangkok Hospitals, while another was hospitalised and has since been discharged.
One permanent resident is also receiving treatment. The extent of the injuries is not known.
“The Australian Government offers its sympathies to those affected by the Singapore Airlines flight SQ321 incident,” a spokesperson for the department said.
“Consular officials from the Australian Embassy in Bangkok are providing consular assistance to Australians affected by the incident including 12 Australian citizens and one permanent resident in hospital in Bangkok.
“One other Australian was hospitalised after the incident but has now been discharged.
“Australians in need of emergency consular assistance should contact the Australian Government’s 24-hour Consular Emergency Centre on +61 2 6261 3305 (from overseas) or 1300 555 135 (from within Australia).”
A total of 211 people were on the flight, including 56 Australians.
Flight SQ321 dropped 6000 feet after hitting clear air turbulence on Monday night, resulting in dozens of injuries and one death.