"The Indian spy Kulbhushan entered Pakistan with a special purpose. Hence, it has been decided that consular access will not been given to him," Khan told reporters in Islamabad.
Pakistan claimed its security forces had arrested Jadhav from Balochistan in March and alleged that he was "a serving officer in the Indian Navy and deputed to the Indian intelligence agency Research and Analysis Wing."
It accused Jadhav of planning "subversive activities" in the country.
India has acknowledged that Jadhav had served with the navy but denied that he has any connection with the government.
"The individual has no link with government since his premature retirement from Indian Navy," the External Affairs Ministry had said in a statement.
India had sought consular access to Jadhav.
HC refuses to vacate stay on Jat reservation
Pakistan hands over 18 Indian fishermen at Wagah Border
Pak finally confirms Mansour's death after Taliban appoints new chief
Vice Admiral Lanba takes over as naval chief
I need to create 2 or 3 Switzerlands in India: Modi