Kishoreganj Sadar is an upazila of Kishoreganj District in the Division of Dhaka, Bangladesh. It is best known as the home upazila of Syed Nazrul Islam, an Acting President of Bangladesh.

Syed Nazrul Islam was a Bangladeshi politician and a senior leader of the Awami League. During the Bangladesh Liberation War, he was declared as the Vice President of Bangladesh by the Provisional Government. He served as the Acting President in the absence of Sheikh Mujibur Rahman.