Regensberg is a municipality in the district of Dielsdorf in the canton of Zurich in Switzerland. It is located just to the west of Dielsdorf, on a ridge of the Lägern.

The canton of Zürich is a Swiss canton in the northeastern part of the country. With a population of 1,553,423, it is the most populous canton in the country. Zürich is the de facto capital of the canton, but is not specifically mentioned in the constitution. The official language is German. The local Swiss German dialect, called Züritüütsch, is commonly spoken.