Emmentaler, Emmenthal, or Emmental cheese is a Swiss cheese. Simply known as Swiss cheese in the US.

The cheese originally comes from the Emme valley in the canton of Bern. Unlike other cheese varieties, the denomination "Emmental" is not protected. Hence, Emmental of other origin, especially from France and Bavaria, is widely available.

Emmental is a yellow, rather hard cheese, with characteristic large holes. It has a piquant, but not really sharp taste.

It features prominently in the cuisine of the United States where it is the standard cheese for use in the preparation of sandwiches, albeit often substituted by cheaper cheese.

In cooking, it is often put on top of dishes which are then put in the oven to let the cheese melt and become golden-brown and crusty. It is also one of the cheese varieties typically put in a cheese fondue.