Wallisellen is a municipality in the district of Bülach in the canton of Zürich in Switzerland, and belongs to the Glatt Valley (German: Glattal).

In the interwar period Wallisellen developed from a village to a growing suburb-municipality of Zurich, but didn't want to have a town charter.

During the Second World War, Wallisellen participated actively in the "cultivation battle" ("Anbauschlacht", i.e. increase in domestic food production due to reductions in imports).

Of the rest of the land, 54.5% is settled (buildings or roads) and the remainder (1.5%) is non-productive (rivers, glaciers or mountains).

Wallisellen Bahnhof is a stop of the Zürich S-Bahn on the lines S8, S14, S19 and on the Stadtbahn Glattal light rail system.

That club has organised since 1993 the Walliseller Lauf (Run of Walisellen), from which all of the earnings go to children who are suffering from cancer.

Wallisellen is known in the German part of Switzerland due to a rhyme: "Aazelle, Bölle schelle, d'Chatz gaht uf Walliselle, chunnt si wider hei, hät si chrummi Bei, piff paff puff und du bisch (ehr und redlich) duss".

Today the native German-speaking population speaks a mixture of Swiss German dialects.