List of administrators of the French protectorate of Tonkin
The position of Resident-Superior of Tonkin (French: Résident supérieur du Tonkin; Vietnamese: Thống sứ Bắc Kỳ; chữ Hán: 統使北圻) was established on 8 April 1886 as a successor to the Resident-General of Annam and Tonkin (résident général de l'Annam et du Tonkin) when it was decided to have one French resident for the French protectorate of Tonkin and a separate one for Annam.
Source: Wikipedia — List of administrators of the French protectorate of Tonkin (CC BY-SA 4.0)