AFC West Division past winners Due to a players strike in 1982 the regular season was reduced to nine games |
| Year | Winner | Regular Season Record |
| 1970 | Oakland Raiders | 8-4-2 |
| 1971 | Kansas City Chiefs | 10-3-1 |
| 1972 | Oakland Raiders | 10-3-1 |
| 1973 | Oakland Raiders | 9-4-0 |
| 1974 | Oakland Raiders | 12-2-0 |
| 1975 | Oakland Raiders | 11-3-0 |
| 1976 | Oakland Raiders | 13-1-0 |
| 1977 | Denver Broncos | 12-2-0 |
| 1978 | Denver Broncos | 10-6-0 |
| 1979 | San Diego Chargers | 12-4-0 |
| 1980 | San Diego Chargers | 11-5-0 |
| 1981 | San Diego Chargers | 10-6-0 |
| 1982 | Los Angeles Raiders | 8-1-0 |
| 1983 | Los Angeles Raiders | 12-4-0 |
| 1984 | Denver Broncos | 13-3-0 |
| 1985 | Los Angeles Raiders | 12-4-0 |
| 1986 | Denver Broncos | 11-5-0 |
| 1987 | Denver Broncos | 10-4-1 |
| 1988 | Seattle Seahawks | 9-7-0 |
| 1989 | Denver Broncos | 11-5-0 |
| 1990 | Los Angeles Raiders | 12-4-0 |
| 1991 | Denver Broncos | 12-4-0 |
| 1992 | San Diego Chargers | 11-5-0 |
| 1993 | Kansas City Chiefs | 11-5-0 |
| 1994 | San Diego Chargers | 11-5-0 |
| 1995 | Kansas City Chiefs | 13-3-0 |
| 1996 | Denver Broncos | 13-3-0 |
| 1997 | Kansas City Chiefs | 13-3-0 |
| 1998 | Denver Broncos | 14-2-0 |
| 1999 | Seattle Seahawks | 9-7-0 |
| 2000 | Oakland Raiders | 12-4-0 |
| 2001 | Oakland Raiders | 10-6-0 |
| 2002 | Oakland Raiders | 11-5-0 |
| 2003 | Kansas City Chiefs | 13-3-0 |
| 2004 | San Diego Chargers | 12-4-0 |
| 2005 | Denver Broncos | 13-3-0 |
| 2006 | San Diego Chargers | 14-2-0 |
| 2007 | San Diego Chargers | 11-5-0 |
| 2008 | San Diego Chargers | 8-8-0 |