Kumarkhali (Bengali: কুমারখালি) is an upazila of Kushtia District in the Division of Khulna, Bangladesh.

[4] It is famous for the Shelaidaha area, where the poet Rabindranath Tagore spent a considerable time of his youth.

[4] As of the 2011 Census of Bangladesh, Kumarkhali upazila had 79,008 households and a population of 328,457.

[8] Kumarkhali Thana was formed in 1855 consisting of 13 parganas and it was upgraded into a Sub Division of Pabna District in 1857.

[4] The upazila is divided into Kumarkhali Municipality and 11 union parishads: Bagulat, Chandpur, Chapra, Jadu Boyra, Jagannathpur, Kaya, Nandalalpur, Panti, Sadaki, Sadipur, and Shelaidaha.