David Dixon, 53, who was missing since Tuesday's bombings, has been confirmed dead by his family.
Tuesday's attacks on the Brussels airport and metro system killed 31 people and injured many more.
Forensic officials have warned that formal identification of the victims of the Brussels bombings could take weeks.
In a large military hospital complex in the north of the Belgian campital, experts are working to establish the identities of the victims through teeth, fingerprints and DNA.
"The number of non-identified people is very, very exceptional," federal police spokesman Michael Jonnois told AFP.
"It was an 'open' catastrophe, there was no list of who was in the train or at the airport terminal -- there was no passenger list like when there's a plane crash."
Only once they have been formally identified will relatives be able to take the bodies away for funerals.
An American survivor of the Brussels airport bombing - who also survived the Boston bombing - has recounted the deadly attack.
A British woman captured in amateur footage huddling with her family after the Brussels airport blasts has spoken of her ordeal.
After escaping the Brussels Airport suicide attacks, Sneha Mehta wrote an inspirational message of hope and peace for her unborn child.