Which Wich, stylized as Which Wich?, is a fast casual dining restaurant that bases their menu around salads and sandwiches. It is headquartered in Downtown Dallas. Currently, Which Wich has over 379 locations in the United States, found in 36 out of the 50 states. It also has locations in the District of Columbia as well as in 27 different countries. It was founded in 2003 and began to franchise its locations in the year 2005. It has a unique ordering system that allows customers to mark down what they want on the menus on the sandwich bags using a red sharpie.