Oberweis Dairy, headquartered in North Aurora, Illinois, is the parent company of several dairy-related and fast food restaurant operations in the midwest region of the United States.

[3] In 1915, Peter J. Oberweis began selling his excess milk to his neighbors in Kane County, Illinois; the business became full-time in 1927.

[11][12] In May 2024, the Hoffmann Family of Companies, a private equity firm based in Winnetka, Illinois, won a bid to purchase Oberweis Dairy out of bankruptcy.

[13] In June 2024, Osprey Capital LLC, the investment arm of the Hoffmann Family of Companies, officially acquired Oberweis Dairy.

[16] In 2012, Oberweis opened their first quick-service hamburger restaurant, named That Burger Joint, intended to expand as a chain and compete directly with Five Guys.

[5] Oberweis Dairy states their reason for the decision is to successfully fulfill their motto, which is to "provide simply the best people, products, and places."