Nazarbayeva was re-elected to the post and thanked legislators after receiving unanimous support in the Senate, with all 48 lawmakers voting for her. Kazakh President Kassym-Jomart Tokayev had suggested her candidacy earlier in the day.
Dariga Nazarbayeva is the eldest daughter of former Kazakh President Nursultan Nazarbayev, who left his post in March. She has been a lawmaker of the upper chamber since September 2016 and was elected as the speaker of the Senate that month.
President Tokayev, who became the head of the state after him will carry out the duties of president until elections in 2020.