Bade Hashim Khamis Abdallah al-Jabr, a Qatari man was found guilty of murdering a British teacher named Lauren Patterson, 24, in 2013.
He was sentenced to was sentenced to death in 2015 but a re-trial was called in February 2016 to reduce his sentence from death penalty, but the court denied the appeal.
Hashim Khamis sexually assaulted, stabbed Ms Patterson and later burnt her remains that were left in a remote desert location.
Patterson’s remains were discovered several hours later by members of a local tribe, alerted by the smell of the burning, the court was told.
Abdallah Hassan Abdul Aziz served a three-year sentence for helping to dispose of Miss Patterson’s body.
Mother Alison Patterson wrote on Facebook:
“The judges have upheld the original death sentence.”
“It will now go to the court of cassation within 60 days as they have the right to appeal. “
“Due to the thoroughness of the judicial system here the likelihood of another appeal is highly unlikely (praying that is the case)”
The Briton’s murder was one of two high-profile cases involving Western teachers in Qatar in recent years.
In 2012, Jennifer Brown, a newly-arrived US teacher from Pennsylvania, was murdered by a Kenyan security guard, Alvine Moseti Anyona, who is now serving life in prison