Chatari Union () is a union, the smallest administrative body of Bangladesh, located in Anwara Upazila, Chittagong District, Bangladesh. The total population is 19,022.
The area of Chatari Union is 3,265 acres (13.21 square kilometers).
According to the 2011 Bangladeshi census, Chatari Union had a population of 19,022, of which 9,384 were males and 9,638 were females. The total number of households was 3,708.
Chatari Union is located in the northernmost part of Anwara Upazila, approximately 4 kilometres from the upazila headquarters. It is bounded on the south by Barakhain Union and Anwara Union; on the east by Anwara Union, Haildhar Union, Paraikora Union and Kasiais Union of Patiya Upazila; on the north by Paraikora Union, Jiri Union of Patiya Upazila and Bara Uthan Union of Karnaphuli Upazila; and on the west by Bairag Union and Boro Uthan Union of Karnaphuli Upazila.
Chatari Union is the 8th Union Parishad under Anwara Upazila. The administrative activities of the union fall under the jurisdiction of Anwara Thana. It is part of the Chittagong-13 (Constituency 290) of the National Parliament of Bangladesh. The villages of Chatari Union are:
According to the 2011 Bangladeshi census, Chatari Union had a literacy rate of 63.2%.
The Boalgaon Canal flows through Chatari Union.
The main market of Chatari Union is Chatari Chomohoni Bazar.