The Tarifverbund Nordwestschweiz, also known by its initialisation TNW, is a Swiss public transport tariff network covering the whole of the cantons of Basel-Stadt and Basel-Landschaft, together with parts of the cantons of Aargau, Jura and Solothurn.

Tickets are only valid within the TNW area, and prices are based on zones, with 48 zones covering the whole of the TNW area.

However this does not apply to the extension of Basler Verkehrs-Betriebe's tram line 8 to Weil am Rhein in Germany.

Instead, the TNW is itself a member of the triregio integrated fares network, which also covers the adjoining areas of France and Germany.

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