France and its overseas territories are organised in a hierarchy which is more geographical than political, in that all the admininstrative divisions are treated as part of France, rather than independent colonies.
There are no railways in Mayotte.
There are no railways recorded on any of the other Society Islands.
There are no railways recorded on any of the other Tuamotu & Gambier Islands.
There are no railways in the Iles Australes / Austral Islands and Iles Marquises / Marquesas Islands of French Polynesia.
There are no railways in the Collectivities of Saint Barthélemy, Saint Martin, Saint Pierre & Miquelon and Wallis & Futuna.
There are no railways recorded on any other islands of TAAF.