Định Thành, Cà Mau

Định Thành
Xã Định Thành
Country Vietnam
ProvinceCà Mau
Time zoneUTC+07:00 (Indochina Time)

Định Thành is a rural commune () of Cà Mau Province in the Mekong Delta region of Vietnam.

On 16 June 2025, the Standing Committee of the National Assembly issued Resolution No. 1655/NQ-UBTVQH15 on the rearrangement of commune-level administrative units of Cà Mau Province in 2025 (the resolution takes effect from 16 June 2025). Accordingly, the entire natural area of 27.92 km² with a population of 9,103 people of Định Thành A Commune, and the entire natural area of 57.68 km² with a population of 13,405 people of An Phúc Commune, were merged into the entire natural area of 31.58 km² with a population of 13,056 people of Định Thành Commune, Đông Hải District, Bạc Liêu Province.