The Briton has not yet been named.
"Earlier today (Thursday), a 40-year-old British male lost his life working on Khalifa International Stadium," the Supreme Committee said in a statement.
The dead man's family have been informed and an investigation launched, said the Supreme Committee.
No cause of death has yet been announced.
"The Supreme Committee for Delivery and Legacy shares our deepest condolences with the family for their loss," added the statement.
