"Seven people were aboard the plane from Punta Cana to Arroyo Barril," the Dominican Civil Aviation office said in a statement.
The victims were identified as Dominican pilot Hector Soriano, 37, and six passengers, the office said.
It did not immediately specify how many people were from which country or identify them.
Spain's foreign office later confirmed that two of those on board were of Spanish nationality.
Authorities said they were investigating the cause of the Sky-High Piper PA-32's crash. They said witness reports that the pilot tried to land on the golf course suggests a possible mechanical cause.
Punta Cana, on the north coast, is the Caribbean country's largest single collection of resorts.