Where did Swiss steak originate?

Swiss steak didn't originate in Switzerland.

The name is a bit of a misnomer. It's believed to have come about because the dish was popular in Swiss-German communities in the United States in the early 20th century.

The dish itself likely has roots in German and Austrian cuisine, where similar preparations involving meat pounded thin and cooked with gravy were common.

While the exact origin of Swiss steak is unclear, it's widely believed to be an American invention, not Swiss at all!