The provincial government media office said Sunday the militants were killed late on Saturday in Maiwand district.
A statement released by the government media office said the militants were crossing from Qala-e-Shamir area when they were traced and eliminated in an airstrike.
The statement further added that the militants were travelling in a vehicle.
Afghan special forces also confiscated a number of weapons along with ammunition following the operation, the statement added.
The anti-government armed militant groups have not commented regarding the report so far.
Kandahar is among the volatile provinces in southern Afghanistan where anti-government armed militant groups are actively operating in its various districts.