A hamburger is a sandwich (in the United Kingdom and Saudi Arabia, the patty alone is known as a beefburger or burger) involving a patty of ground meat that is usually beef.

The meat can be grilled, fried, steamed, or broiled, and is generally served with various condiments and toppings inside a bun baked specially for this purpose. Burgers are often served with french fries, potato chips, or onion rings.