NA-25 (Dera Ismail Khan-cum-Tank) () was a constituency for the National Assembly of Pakistan. It was split into NA-37 (Tank) and NA-39 (Dera Ismail Khan-II) in 2018. The constituency was established as NA-25 (Dera Ismail Khan) in 1977 when Tank was part of Dera Ismail Khan District as one of its tehsils. In 1992, with Tank becoming a district itself, the constituency name was changed to NA-25 (Dera Ismail Khan-cum-Tank).
A total of 3,622 votes were rejected.
A total of 4,613 votes were rejected.
A total of 9,165 votes were rejected.
A by-election took place on 22 August 2013.