Sempati Air was an airline based in Indonesia.
Sempati Air was founded in 1968 under the name PT Sempati Air Transport and began flights in the following year. In the beginning it did not offer scheduled services, instead it offered transportation for oil company workers, but soon scheduled flights to Singapore, Kuala Lumpur and Manila were begun. In 1994 the name was changed to Sempati Air. By 1998 Indonesia was suffering a financial crisis which affected Sempati Air and all the international flights were discontinued. Many aircraft were sold or returned to the lessors but those measures were not enough and by June 1998 Sempati Air was out of business.