Chairman of the Senate of Pakistan
The chairman of the Senate of Pakistan (Urdu: صدر ایوانِ بالا, romanized: s̤adr-e Aiwān-e-Bālā) is the president-chair of the Senate of Pakistan. According to the Constitution of Pakistan, the chairman is a presiding official and the Senate must choose a chairman and deputy chairman for a time interval of three years.
Source: Wikipedia — Chairman of the Senate of Pakistan (CC BY-SA 4.0)