Shahjahan is a Bangladesh Nationalist Party politician and a former member of parliament for Noakhali-4.

[1] Shahjahan was elected to parliament from Noakhali-4 as a Bangladesh Nationalist Party candidate in 2001.

He was arrested on 8 March 2015 by the Rapid Action Battalion for being involved in a conspiracy against the Bangladeshi government.

[2] In November 2015, he was tasked with nominating Bangladesh Nationalist Party candidates for municipal elections.

In 2016, he resigned from his post of presidency of the Noakhali District unit of Bangladesh Nationalist Party.