They were killed by unidentified gunmen on their way to work on Sunday. The deaths are the latest in a string of assassinations targeting journalists, activists and other political figures.
The violence comes as President Donald Trump continues a drawdown of US troops in the country - with only 2,500 left.
The Afghan vice-president told the BBC this week that the pull-out risks more violence in an unstable country.
The women were shot dead in an early morning ambush, which also saw their driver wounded.
The incident happened in the Qala-e-Fathullah area of Kabul and no group has said it carried out the attack.