Oscar Mayer is an American meat and cold cut producer known for its hot dogs, bologna, bacon, ham, and Lunchables products.

German immigrant Oscar F. Mayer (1859–1955), born in Kösingen, Germany, began working at a meat market in Detroit, Michigan, and later in Chicago, Illinois.

The Mayer brothers sold bratwurst, liverwurst, and weißwurst, which were popular in the predominantly German neighborhoods around their Chicago meat market.

[1][2][3] As the meat market's popularity grew, it expanded its storefront and participated in sponsoring local events including the 1893 Chicago World's Fair.

On November 4, 2015, owner Kraft Heinz announced it would move the Oscar Mayer headquarters and the company's U.S. meats business from Madison back to Chicago.

[13] In 2019, Oscar Mayer started sponsoring Ryan Newman in the NASCAR cup series in the number 6 Roush Fenway Racing car.