NA-166 Bahawalpur-III () is a constituency for the National Assembly of Pakistan.
General elections were held on 10 October 2002. Makhdoom Zada Syed Ali Hassan Gillani of PML-Q won by 51,435 votes.
General elections were held on 18 February 2008. Arif Aziz Sheikh of PPP won by 71,394 votes.
General elections were held on 11 May 2013. Makhdoom Syed Ali Hassan Gillani of PML-N won by 61,891 votes and became the member of National Assembly.
General elections were held on 25 July 2018.
General elections were held on 8 February 2024. Makhdoom Syed Sami Ul Hassan Gillani won the election with 62,157 votes.