The tragic incident happened on Saturday morning at an apartment complex on Vo Nguyen Giap District in Son Tra District.
At around 5 a.m. others living in the apartment heard a loud thud and discovered the 45-year-old man, whose name has not been revealed, lying dead on the ground.
He had been staying alone in an 11th floor apartment for several days, local media reports said. No further details are known about the man yet.
The police said the body of the man is at the city mortuary and authorities are in touch with the South Korean embassy to notify his next of kin.
An autopsy will be done to identify the cause of the death.
Da Nang, Vietnam’s third largest city, is one of the most visited destinations in the country, with 2.81 million foreigners touching down in the first nine months of this year, a 21 percent jump from a year ago, according to official data. South Koreans are the second biggest group of foreign visitors in Da Nang after China.