Northalsted Market Days is an annual two-day festival in Chicago, Illinois, United States.

Established in 1982, it's the Midwest's largest street festival with annual attendance exceeding 300,000 people over the two-day event.

There are also Halsted business establishment tents, as well as those of radio stations, public service organizations & companies (SAAB in 2008).

2006 was the 25th Anniversary for North Halsted Market Days, and helping celebrate were such performers as Billie Myers, Brazilian Girls, Powder, East Village Opera Company and Michael McDermott.

2008 performers included '80s pop group Exposé and Broadway singer Jennifer Holliday.