Tri-state

Tri-state may refer to:


 * Tri-State Airport, a public airport located in West Virginia, United States
 * Tri-state area, an area where three states of the U.S. meet at one point or share a metropolitan area
 * Tri-State (basketball), the 3-on-3 basketball team that plays in the BIG3
 * Tri-State Bird Rescue and Research, a wildlife rehabilitation organization specializing in bird rescue during oil spills
 * Tri-State Christian Television, a network of several religious TV stations
 * Tri-State League, five circuits in American minor league baseball
 * Tri-state logic, electronic logic gate type
 * Tri-State Tollway, a U.S. toll road
 * Trine University, formerly Tri-State University, a university in Angola, Indiana
 * Tri-State (album), a 2006 album by Above & Beyond
 * Tri-State (band), an American rock band
 * Tri-state check box, specific graphical user interface element
 * Tri-State Tornado, the 1925 deadliest single tornado ever recorded in the United States
 * Tri-State district, a historic lead-zinc mining district (Missouri, Kansas and Oklahoma)