A Coney Island hot dog, Coney dog, or Coney is a hot dog in a bun topped with a savory meat sauce and sometimes other toppings. It is often offered as part of a menu of classic American diner dishes and often at Coney Island restaurants. It is largely a phenomenon related to immigration from Greece and the region of Macedonia to the United States in the early 20th century.

A hot dog is a dish consisting of a grilled, steamed, or boiled sausage served in the slit of a partially sliced bun. The term hot dog can refer to the sausage itself. The sausage used is a wiener or a frankfurter. The names of these sausages commonly refer to their assembled dish. Hot dog preparation and condiments vary worldwide. Typical condiments include mustard, ketchup, relish, onions in tomato sauce, and cheese sauce. Other toppings include sauerkraut, diced onions, jalapeños, chili, grated cheese, coleslaw, bacon and olives. Hot dog variants include the corn dog and pigs in a blanket. The hot dog's cultural traditions include the Nathan's Hot Dog Eating Contest and the Oscar Mayer Wienermobile.