| Trung Dũng | |
| Settlement Type: | Ward (Viet Nam) |
| Pushpin Map: | Vietnam |
| Pushpin Label Position: | top |
| Pushpin Mapsize: | 300 |
| Pushpin Map Caption: | Location in Vietnam |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Đồng Nai |
| Subdivision Type2: | District |
| Subdivision Name2: | Xuân Lộc district |
| Subdivision Name3: | Southeast |
| Unit Pref: | Imperial |
| Area Total Km2: | 13,05 |
| Population As Of: | 1999 |
| Population Total: | 7.749 |
| Population Blank1 Title: | Ethnicities |
| Timezone: | UTC+7 |
| Utc Offset: | +7 |
Xuân Định is a commune (xã) in Xuân Lộc District, Vietnam.
Thái Xuân is a hamlet within Xuân Định, in proximity to Saigon. It was founded in 1954 by Father John Chinh Tran, a Catholic priest, in what was South Vietnam at the time. Chinh founded it with peasants who had fled North Vietnam. The group, who were Catholic, were from Thái Bình Province. Due to the Xuân Lộc location and the Thái Bình origin, the hamlet was named "Thái Xuân".[1]
After the Vietnam War lead to the disestablishment of South Vietnam, many Catholic refugees arrived in the United States. In Houston, Chinh founded Thai Xuan Village as a new community, and named it after the old village.[1] As of 2005, 99% of the residents of Thai Xuan have remained as Roman Catholics.[2]
Bảo Thị is a hamlet within Xuân Định.