| Định Thành | |
| Native Name: | Xã Định Thành |
| Settlement Type: | Rural commune |
| Pushpin Map: | Vietnam |
| Pushpin Label Position: | top |
| Pushpin Mapsize: | 300 |
| Pushpin Map Caption: | Location in Vietnam |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Bạc Liêu |
| Subdivision Type2: | District |
| Subdivision Name2: | Đông Hải |
| Unit Pref: | Imperial |
| Population Blank1 Title: | Ethnicities |
| Timezone: | Indochina Time |
| Utc Offset: | +07:00 |
Định Thành is a rural commune (Vietnamese: xã) of Đông Hải District, Bạc Liêu Province in the Mekong Delta region of Vietnam.[1]
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