Lakshmipur or Laxmipur Sadar is an upazila of Lakshmipur District in the Division of Chittagong, Bangladesh.

Lakshmipur is a district of Bangladesh with an area of 1,440.39 km2. It is bordered by Chandpur to the north, Bhola and Noakhali districts to the south, Noakhali to the east, and Barisal and Bhola districts to the west. Lakshmipur was part of Noakhali until 15 February 1984. At that time, the western part of Noakhali was promoted from Lakshmipur subdivision to Lakshmipur district to provide administrative facilities.