Turkey has a military base in Qatar under a defence agreement signed between the two countries in 2014.
In a statement, Qatar’s interior ministry said that all seven people on board had been found dead.
It expressed its “deepest condolences” to the victims’ families.
Turkey’s defence ministry said the Qatari military helicopter had been “carrying out a training exercise as part of the Qatar-Turkey Joint Forces Command”.
The two technicians were from the Aselsan defence corporation, the ministry said, adding that the exact cause of the crash would be determined by Qatari authorities.
The crash comes as the US and Israel continue their wide-ranging strikes against Iran, while Tehran retaliates with its own attacks against Israel and US-allied states in the Gulf.