Leighton Holdings of Australia has won a $US74 million contract to build a proton cancer therapy centre in Saudi Arabia.
Proton therapy is a form of radiation used to treat cancer.
AAP reports it will be built at King Fahad Medical City in Riyadh in a 50:50 joint venture with Al Latifia Trading and Contracting.
It is the second healthcare contract the Leighton's Middle Eastern joint venture Habtoor Leighton Group has won in Saudi Arabia in the past month month.
In September, it won a $US316 million deal - also with Al Latifia Trading and Contracting - to build new medical centres.