French passport holders need a visa for Tanzania and normally select the Ordinary Visa for tourism. France is listed for both online and on-arrival facilities, while Tanzania Immigration recommends applying online.
A French citizen taking a safari, Zanzibar holiday, Kilimanjaro trek or private leisure trip normally fits the Ordinary Visa category. The route is based on the passport and the real purpose of travel. Residence in Réunion, Mayotte, another EU state or elsewhere does not change the nationality printed in a French passport, although the recent travel route can affect separate health checks.
Visa on arrival is currently available to French nationals, but availability is not the same as convenience. Completing the application before departure can remove the need to organise files and payment after a long flight. It also creates time to replace a reflective passport scan or explain an itinerary that includes several camps and islands.
An Ordinary Visa is used for permitted short visits and may allow a stay of up to 90 days under the official guidance. The actual grant notice and border endorsement control the holder's permission. Tourism does not authorise employment, paid assignments or a long academic programme. A traveller should not choose the easiest-looking category when another purpose describes the journey more accurately.