By public transport:

By metro:
Metro stations: Les Halles and Châtelet
Line 1: La Défense - Château de Vincennes
Line 4: Porte de Clignancourt - Porte d'Orléans
Line 7: La Courneuve - Villejuif/Mairie d'Ivry
Line 11: Mairie des Lilas - Châtelet
Line 14: Saint-Lazare - Bibliothèque François-Mitterrand

By RER:
Station: Châtelet-Les Halles
Line A: Cergy-le-Haut/Poissy/Saint-Germain-en-Laye - Marne-la-Vallée/Boissy-Saint-Léger
Line B: Roissy/Mitry-Claye - Saint-Rémy-lès-Chevreuse/Robinson
Line D: Orry-la-Ville - Melun/Malesherbes

By bus:
14 lines with bus stops surrounding the district close to the Forum (Rue de Rivoli, Boulevard Sébastopol, Rue Étienne-Marcel and Rue du Louvre): Lines 21, 29, 38, 47, 58, 67, 69, 70, 72, 74, 75, 76, 81, 85, 96.

On foot:

7 means of access for pedestrians to the Forum des Halles :
Porte Lescot: from the Rue Pierre-Lescot, near the Rue Saint-Denis, just opposite the Rue de la Cossonnerie, by escalators arriving at the information desk then at the metro.
Porte Berger: from the Rue Berger, close to the Square des Innocents and the Rue des Innocents as well as the Rue des Halles, by escalators arriving next to the Place Basse.
Porte Rambuteau: from the Rue Rambuteau, not far from the Rue de la Grande-Truanderie and the Rue Mondétour, by escalators leading to the Rue des Piliers.
Porte Pont-Neuf: from the Rue du Pont-Neuf, close to the Rue de Rivoli, by escalators arriving at the place Carrée.
Porte Saint-Eustache: from the Rue Rambuteau, at the crossroads of Rue Turbigo, Rue Montorgueil and Rue Montmartre, by escalators also arriving at the place Carrée.
Porte du Jour: from the Rue du Jour, in front of the Saint-Eustache church square, by escalators leading to the place de la Rotonde and the Grande-Galerie.
Porte du Louvre: from the Bourse du Commerce (Rue des Viarmes) close to the Rue du Louvre, by escalators leading to the Rue de la Boucle.