Pacific Twelve Conference
Originally known as the Pacific Ten Conference (1986-2010)
Regular Season Champion

1986-87 Southern Cal
1987-88 Washington
1988-89 Stanford
1989-90 Stanford, Washington
1990-91 Stanford
1991-92 Stanford
1992-93 Stanford
1993-94 Southern Cal
1994-95 Stanford
1995-96 Stanford
1996-97 Stanford
1997-98 Stanford
1998-99 Oregon, UCLA
1999-00 Oregon
2000-01 Washington, Arizona St., Stanford 
2001-02 Stanford
2002-03 Stanford
2003-04 Arizona, Stanford
2004-05 Stanford
2005-06 Stanford
2006-07 Stanford
2007-08 Stanford
2008-09 Stanford
2009-10 Stanford
2010-11 Stanford
2011-12 Stanford
2012-13 Stanford
2013-14 Stanford
2014-15 Oregon State
2015-16 Arizona State, Oregon State
2016-17 Oregon State
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