The Washington Intercollegiate Conference (WINCO) was an intercollegiate athletic conference composed of member schools located in the state of Washington that operated from 1937 to 1948. The conference was formed in 1937 with four charter members. Three of the members had been a part of the disbanded Tri-Normal Conference: Central Washington College of Education (now known as Central Washington University), Eastern Washington College of Education (now known as Eastern Washington University), and Western Washington State College (now known as Western Washington University). The fourth charter member was Pacific Lutheran College (now known as Pacific Lutheran University).^[1] Saint Martin's College (now known as Saint Martin's University) and Whitworth College (now known as Whitworth University later joined the WINCO. When the conference disbanded in 1948, the six member schools joined the newly-formed Evergreen Conference.^[2]