An Upazila Nirbahi Officer (Bengali: উপজেলা নির্বাহী অফিসার, romanized: Upôjēlā Nirbāhī Ôphisār, abbreviated as UNO) is the chief executive officer of an upazila (subdistrict) and a mid-level officer of the Bangladesh Civil Service (administration cadre), known as Bangladesh Administrative Service. A senior assistant secretary is usually assigned to this post.[1]
UNO works as chief executive officer of an upazila parishad for executing all decisions taken by the upazila parishad and ensuring financial disciplines of the funds of upazila parishad and representative of the government of Bangladesh in the upazila level for performing retained activities to the government of Bangladesh, non-transferred and controlling activities.[2]