The military officials said Sunday that the Special Forces conducted the raid in Anar Darah district of the province.
The officials further added that the Special Forces also destroyed a cache of weapons belonging to Taliban.
The security situation in Farah province has deteriorated during the recent months.
Taliban militants are active in some districts of the province and often conduct terrorist related activities.
Meanwhile, the Afghan forces routinely conduct counter-terrorism operations against the anti-government armed groups in this province.
The U.S. forces also conduct regular airstrikes in restive parts of the country to suppress Taliban and other anti-government militants.