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| American Football NCAA Conference Championships Big Sky (Big Sky Conference) | 
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| |
| Year | 
| 
| 
|
| 2008 | |||
| 2007 | Montana | Eastern Washington | Northern Arizona |
| 2006 | Montana | Montana State | -- |
| Portland State | |||
| 2005 | Eastern Washington | -- | |
| Montana | |||
| Montana State | |||
| 2004 | Eastern Washington | -- | Montana State |
| Montana | Portland State | ||
| 2003 | Montana | -- | -- |
| Montana State | |||
| Northern Arizona | |||
| 2002 | Idaho State | -- | -- |
| Montana | |||
| Montana State | |||
| 2001 | Montana | Northern Arizona | -- |
| Portland State | |||
| 2000 | Montana | Cal State-Sacramento | -- |
| Eastern Washington | |||
| Portland State | |||
| Weber State | |||
| 1999 | Montana | Eastern Washington | |
| Portland State | |||
| 1998 | Montana | Cal State-Northridge | -- |
| Montana State | |||
| 1997 | Eastern Washington | Montana | Montana State |
| 1996 | Montana | Northern Arizona | Cal State-Northridge |
| Weber State | |||
| 1995 | Montana | Boise State | -- |
| Idaho | |||
| Northern Arizona | |||
| Weber State | |||
| 1994 | Boise State | Idaho | -- |
| Montana | |||
| 1993 | Montana | Eastern Washington | -- |
| Idaho | |||
| 1992 | Idaho | -- | Montana |
| Eastern Washington | Weber State | ||
| 1991 | Nevada | Montana | -- |
| Weber State | |||
| 1990 | Nevada | Boise State | -- |
| Idaho | |||
| 1989 | Idaho | Montana | Boise State |
| Nevada | |||
| 1988 | Idaho | Montana | Boise State |
| 1987 | Idaho | Weber State | Montana |
| 1986 | Nevada | Idaho | -- |
| Northern Arizona | |||
| 1985 | Idaho | Nevada | Boise State |
| 1984 | Montana State | Nevada | Boise State |
| Idaho | |||
| Idaho State | |||
| 1983 | Nevada | Idaho State | Boise State |
| Idaho | |||
| 1982 | Montana | Idaho | -- |
| Montana State | |||
| 1981 | Idaho State | Boise State | Montana |
| 1980 | Boise State | Idaho | -- |
| Nevada | |||
| 1979 | Montana State | Nevada | Northern Arizona |
| Weber State | |||
| 1978 | Northern Arizona | Montana | -- |
| Montana State | |||
| 1977 | Boise State | Northern Arizona | Montana State |
| 1976 | Montana State | Idaho | Northern Arizona |
| 1975 | Boise State | Idaho State | -- |
| Montana State | |||
| 1974 | Boise State | Montana State | Idaho |
| 1973 | Boise State | Montana State | Northern Arizona |
| 1972 | Montana State | Idaho State | Boise State |
| Montana | |||
| 1971 | Idaho | Boise State | Montana |
| 1970 | Montana | Idaho State | Weber State |
| 1969 | Montana | Weber State | Idaho State |
| 1968 | Idaho | -- | -- |
| Montana State | |||
| Weber State | |||
| 1967 | Montana State | Idaho | -- |
| Weber State | |||
| 1966 | Montana State | Idaho | Weber State |
| 1965 | Idaho | -- | Montana |
| Weber State | |||
| 1964 | Montana State | Idaho State | Montana |
| 1963 | Idaho State | Montana State | Weber State |
