Two other Vietnamese regions, Cochinchina (Nam Kỳ) in the South and Tonkin (Bắc Kỳ) in the North, were also units of French Indochina.
Dua wilayah Vietnam lainnya, Cochinchina (Nam Kỳ) di bagian selatan dan Tonkin (Bắc Kỳ) di bagian utara, juga dimasukkan ke dalam Indochina Prancis.