Jhenidah Sadar (Bengali: ঝিনাইদহ সদর) is an upazila of Jhenaidah District[4] in the Division of Khulna, Bangladesh.

[5] As of the 2011 Census of Bangladesh, Jhenaidah Sadar upazila had 108,924 households and a population of 455,932.

[5][7] Naldanga Temple Complex, in the Jhenaidah Sadar Upazila, is a temple complex built in 1656 by Maharaj Indranarayan Debroy.

Jhenaidah Sadar Upazila is divided into Jhenaidah Municipality and 17 union parishads: Dogachhi, Furshondi, Ganna, Ghorshal, Halidhani, Harishongkorpur, Kalicharanpur, Kumrabaria, Maharazpur, Modhuhati, Naldanga, Padmakar, Paglakanai, Porahati, Sadhuhati, Saganna, and Surat.

Government KC College, founded in 1960,[4] is the only masters level one.