NA-251 Sherani-cum-Zhob-cum-Killa Saifullah () is a constituency for the National Assembly of Pakistan.
General elections were held on 10 October 2002. Maulvi Muhammad Khan Sherani of Muttahida Majlis-e-Amal won by 20,381 votes.
General elections were held on 18 February 2008. Maulvi Asmatullah an Independent candidate won by 24,204 votes.
General elections were held on 11 May 2013. Moulana Mohammad Khan Sherani of JUI-F won by 30,870 votes and became the member of National Assembly.
General elections were held on 25 July 2018.
<sup>â </sup><small>JUI-F contested as part of MMA</small>
General elections were held on 8 February 2024. Syed Samiullah won the election with 46,210 votes.