Bi-State could refer to any of the following:
Historic places
Bi (state), A Chinese ancient vassal state
Transportation
Metro Transit (St. Louis) - an enterprise of the Bi-State Development Agency
Organisations
Bi-State Development Agency
Landmarks and buildings
Bi-State Vietnam Gold Star Bridges Bi-State Parks Airport
Sport events
Bi-State League Bi-State League (1915) Bi-State Conference
See also
Bi (surname)