HCMGIS OpenData [https://opendata.hcmgis.vn/] A source for Layers, Maps and Documents related to GIS work on Ho Chi Minh City
GADM [https://gadm.org/maps/VNM.html] A free source of polygons for Country level, province, and wards of Vietnam. “GADM wants to map the administrative areas of all countries, at all levels of sub-division. We use a high spatial resolution, and of a extensive set of attributes. This is a never ending project, but we are happy to share what we have.” The data are freely available for academic use and other non-commercial use. Redistribution, or commercial use is not allowed without prior permission.