J Mart is a department store in South Park. It is often patronized by lower-income families, and avoided by those who are well off.
In "Here Comes the Neighborhood", Token Black, having being picked on by the other South Park Elementary students for being rich, pleaded his parents to visit J-Mart. As the mart did not have a valet parking service, and were using fluorescent lightings, Token's parents felt very uncomfortable. Their mere presence in the mart invited stares from other patrons as well.
- J-Mart is a parody of K-Mart, which also offers low-priced goods of average qualities.