| Koyla Union | |
| Native Name: | কয়লা ইউনিয়ন |
| Native Name Lang: | bn |
| Settlement Type: | Union |
| Pushpin Map: | Bangladesh |
| Pushpin Map Alt: | Location in Bangladesh |
| Pushpin Label Position: | Right |
| Coordinates: | 22.8588°N 89.0529°W |
| Subdivision Type: | Country |
| Subdivision Name: | Bangladesh |
| Subdivision Type1: | Division |
| Subdivision Name1: | Khulna |
| Subdivision Type2: | District |
| Subdivision Name2: | Satkhira |
| Subdivision Type3: | Upazila |
| Subdivision Name3: | Kalaroa |
| Established Title: | Established |
| Unit Pref: | Metric |
| Population As Of: | 2011 |
| Population Density Km2: | auto |
| Timezone1: | BST |
| Utc Offset1: | +6 |
| Official Name: | Koyla Union |
Koyla (Bengali: কয়লা) is a union parishad under Kalaroa Upazila, Satkhira District, in the Division of Khulna, southwest part of Bangladesh.[1]