| Belgachi Union | |
| Native Name: | বেলগাছি ইউনিয়ন |
| Native Name Lang: | bn |
| Settlement Type: | Union |
| Pushpin Map: | Bangladesh |
| Pushpin Map Alt: | Location in Bangladesh |
| Pushpin Label Position: | Right |
| Coordinates: | 23.7213°N 88.9525°W |
| Subdivision Type: | Country |
| Subdivision Name: | Bangladesh |
| Subdivision Type1: | Division |
| Subdivision Name1: | Khulna |
| Subdivision Type2: | District |
| Subdivision Name2: | Chuadanga |
| Subdivision Type3: | Upazila |
| Subdivision Name3: | Alamdanga |
| Established Title: | Established |
| Unit Pref: | Metric |
| Area Total Km2: | 52.68 |
| Population As Of: | 2011 |
| Population Total: | 14,426 |
| Population Density Km2: | auto |
| Timezone1: | BST |
| Utc Offset1: | +6 |
| Official Name: | Belgachi Union |
Belgachi Union (Bengali: বেলগাছি ইউনিয়ন) is a union parishad of Alamdanga Upazila, in Chuadanga District, Khulna Division of Bangladesh.[1] The union has an area of and as of 2001 had a population of 14,426.[2] There are 6 villages and 3 mouzas in the union.