Kalagachhia Union

{{Infobox settlement

|name = Kalagachhia Union

|native_name = কলাগাছিয়া ইউনিয়ন

|native_name_lang = bn

|pushpin_map = Bangladesh

|coordinates = {{coord|23.5957|90.5342|region:BD_type:city|display=inline,title}}

|subdivision_type = Country

|subdivision_name = Bangladesh

|subdivision_type1 = Division

|subdivision_name1 = Dhaka Division

|subdivision_type2 = District

|subdivision_name2 = Narayanganj district

|subdivision_type3 = Upazila

|subdivision_name3 = Bandar Upazila

|government_type = Union Council

|leader_title = Chairman

|leader_name =

|leader_title1 =

|leader_name1 =

|population_density_km2 = auto

|settlement_type =

|timezone = BST

|utc_offset = +6

}}

Kalagachhia Union ({{langx|bn|কলাগাছিয়া ইউনিয়ন}}) is a union parishad of Bandar Upazila in the district and division of Dhaka, Bangladesh.{{Cite web |last=Bhuiyan |first=Md. Iftekhar Uddin |date=26 October 2023 |title=Bandar Upazila |url=https://en.banglapedia.org/index.php/Bandar_Upazila |access-date=27 March 2024 |website=Banglapedia |publisher=Asiatic Society of Bangladesh |language=en}} It has a population of 21,580 men and 21,976 women. The union has a literacy rate of 60.5 per cent.