In a comment, user3486184 noted the NATO phonetic alphabet. It and other radio spelling alphabets were developed so that no letters could be confused in communications (B rhymes with C, D, G, P, T, V; I rhymes with J, V vs W, etc). It was developed primarily to be accessible English, French, and Spanish speakers. France, like many countries, uses it internationally in air traffic and emergency services.
France also has its own version. L'alphabet téléphonique (ou radio) français uses completely different words, most of which are first names:
Anatole, Berthe, Célestine, Désiré, Eugène, François, Gaston, Henri, Irma, Joseph, Kléber, Louis, Marcel, Nicolas, Oscar, Pierre, Quintal, Raoul, Suzanne, Thérèse, Ursule, Victor, William, Xavier, Yvonne, Zoé
Oscar and Victor are the same in both l'alphabet radio and NATO/ICAO spelling alphabets.
In other parts of the Francophone world, A is for Alice in Canada, Arthur in Belgium and Anna in Switzerland.