NA-90 Mianwali-II () is a constituency for the National Assembly of Pakistan.
General elections were held on 10 October 2002. Sher Afgan Khan Niazi of Pakistan Peoples Party Parliamentarian (PPPP) won by 50,210 votes.
The result of the 2008 Pakistani general election in this constituency is given below.
Humair Hayat Khan Rokhri succeeded in the 2008 election and became the member of National Assembly.
General elections were held on 11 May 2013. Amjad Ali Khan Niazi of the Pakistan Tehreek-e-Insaf won by 126,088 votes and became the member of National Assembly.
General elections were held on 25 July 2018.
General elections were held on 8 February 2024. Umair Khan Niazi won the election with 179,956 votes.