Assasuni (Bengali: আশাশুনি, Aashashooni, Ashashuni , means hearing the hope ) is an upazila of Satkhira District in Khulna Division, Bangladesh.

The population above the age of 18 was 110,961, with a literacy rate of 30.3% (7+ years), below the national average of 32.4%.

[6] Assasuni Upazila is divided into 11 union parishads: Anulia, Assasuni, Baradal, Budhhata, Durgapur, Kadakati, Khajra, Kulla, Pratapnagar, Sobhnali, and Sreeula.

Teams of trained doctors and nurses work to deal with any accident or emergency.

The earthen embankments and seawalls are always on the threat of erosion during every rainy seasons.