Bali Nine ringleader Andrew Chan has lost his final appeal, with Indonesia's Supreme Court upholding his death sentence.

The decision was made on May 10, but the judgment was only posted on the Supreme Court website on Friday afternoon.

Appeal denied ... Andrew Chan's death sentence has been upheld. Credit:Jason Childs

Chan and fellow ringleader Myuran Sukumaran were among nine Australians convicted over a 2005 attempt to smuggle more than eight kilograms of heroin out of Bali.

Chan and Sukumaran both launched final appeals, known as a judicial review, in August last year.