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). 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.

Football champions

1938 – Western Washington 1939 – Eastern Washington & Pacific Lutheran 1940 – Pacific Lutheran 1941 – Pacific Lutheran1942 – Central Washington 1943 – No champion 1944 – No champion1945 – No champion 1946 – Central Washington 1947 – Eastern Washington & Pacific Lutheran

Yearly football standings

1938 Washington Intercollegiate Conference football standings
vteConf.Overall
1938 Washington Intercollegiate Conference football standings vte Conf. Overall Team W L T W L T Western Washington $ 3 – 0 – 0 7 – 0 – 0 Eastern Washington 2 – 1 – 0 6 – 2 – 1 Central Washington 1 – 2 – 0 3 – 3 – 1 Pacific Lutheran 0 – 3 – 0 2 – 5 – 1 $ – Conference champion1939 Washington Intercollegiate Conference football standings vte Conf. Overall Team W L T W L T Pacific Lutheran + 2 – 1 – 0 7 – 1 – 0 Eastern Washington + 2 – 1 – 0 5 – 3 – 0 Central Washington 1 – 2 – 0 5 – 2 – 0 Western Washington 1 – 2 – 0 5 – 2 – 0 + – Conference co-champions1940 Washington Intercollegiate Conference football standings vte Conf. Overall Team W L T W L T Pacific Lutheran $ 4 – 0 – 0 8 – 0 – 0 Eastern Washington 3 – 1 – 0 6 – 2 – 0 Central Washington 2 – 2 – 0 4 – 3 – 0 Western Washington 1 – 3 – 0 3 – 4 – 0 Saint Martin's 0 – 4 – 0 1 – 6 – 0 $ – Conference champion
TeamWLTWLT
Western Washington $300700
Eastern Washington210621
Central Washington120331
Pacific Lutheran030251
$ – Conference champion
vteConf.Overall
TeamWLTWLT
Pacific Lutheran +210710
Eastern Washington +210530
Central Washington120520
Western Washington120520
+ – Conference co-champions
vteConf.Overall
TeamWLTWLT
Pacific Lutheran $400800
Eastern Washington310620
Central Washington220430
Western Washington130340
Saint Martin's040160
$ – Conference champion
1941 Washington Intercollegiate Conference football standings vte Conf. Overall Team W L T W L T Pacific Lutheran $ 4 – 0 – 0 8 – 1 – 0 Eastern Washington 2 – 1 – 1 5 – 2 – 1 Western Washington 2 – 2 – 0 5 – 2 – 1 Saint Martin's 0 – 2 – 2 1 – 4 – 2 Central Washington 0 – 3 – 1 1 – 5 – 1 $ – Conference champion1942 Washington Intercollegiate Conference football standings vte Conf. Overall Team W L T W L T Central Washington $ 4 – 1 – 1 5 – 1 – 2 Saint Martin's 3 – 1 – 0 6 – 2 – 0 Eastern Washington 2 – 2 – 0 3 – 4 – 0 Pacific Lutheran 1 – 3 – 1 2 – 5 – 1 Western Washington 0 – 3 – 2 1 – 4 – 2 $ – Conference champion1946 Washington Intercollegiate Conference football standings vte Conf. Overall Team W L T W L T Central Washington $ 5 – 0 – 0 6 – 2 – 0 Eastern Washington 3 – 1 – 1 4 – 3 – 1 Pacific Lutheran 2 – 2 – 1 3 – 3 – 1 Western Washington 2 – 3 – 0 4 – 4 – 0 Saint Martin's 1 – 4 – 0 2 – 4 – 0 Whitworth 1 – 4 – 0 1 – 7 – 0 $ – Conference champion
vteConf.Overall
TeamWLTWLT
Pacific Lutheran $400810
Eastern Washington211521
Western Washington220521
Saint Martin's022142
Central Washington031151
$ – Conference champion
vteConf.Overall
TeamWLTWLT
Central Washington $411512
Saint Martin's310620
Eastern Washington220340
Pacific Lutheran131251
Western Washington032142
$ – Conference champion
vteConf.Overall
TeamWLTWLT
Central Washington $500620
Eastern Washington311431
Pacific Lutheran221331
Western Washington230440
Saint Martin's140240
Whitworth140170
$ – Conference champion
1947 Washington Intercollegiate Conference football standings vte Conf. Overall Team W L T W L T Pacific Lutheran + 4 – 0 – 1 7 – 0 – 2 Eastern Washington + 4 – 0 – 1 6 – 1 – 1 Western Washington 3 – 2 – 0 5 – 3 – 0 Central Washington 2 – 3 – 0 3 – 4 – 0 Saint Martin's 1 – 4 – 0 3 – 6 – 0 Whitworth 0 – 5 – 0 3 – 6 – 0 + – Conference co-champions
vteConf.Overall
TeamWLTWLT
Pacific Lutheran +401702
Eastern Washington +401611
Western Washington320530
Central Washington230340
Saint Martin's140360
Whitworth050360
+ – Conference co-champions