| Season | Regular Season Champion | Tournament Champion |
| 2013 | Colorado Mesa | |
| 2012 | Colorado Mesa | Regis |
| 2011 | Nebraska-Kearney | Mesa State |
| 2010 | New Mexico Highlands | New Mexico Highlands |
| 2009 | Mesa State | CSU-Pueblo |
| 2008 | Mesa State | Nebraska-Kearney |
| 2007 | Mesa State | Nebraska-Kearney |
| 2006 | Mesa State | Mesa State |
| 2005 | Mesa State | New Mexico Highlands |
| 2004 | CSU-Pueblo | CSU-Pueblo |
| 2003 | Fort Hays State | Fort Hays State |
| 2002 | CSU-Pueblo | Metro State |
| 2001 | Mesa State | Mesa State |
| 2000 | New Mexico Highlands | New Mexico Highlands |
| 1999 | Mesa State | Mesa State |
| 1998 | Fort Hays State | Fort Hays State |
| 1997 | Mesa State | Fort Hays State |
| 1996 | Southern Colorado | Southern Colorado |
| 1995* | Fort Hays State | Tournament cancelled due to weather; FHSU declared champion |
| 1994* | Southern Colorado | Southern Colorado |
| 1993* | Mesa State | Mesa State |
| 1992 | Mesa State | Mesa State |
| 1990 | Mesa State | No Tournament |
| 1988 | Mesa State | Western New Mexico |
| 1987 | Mesa State | Mesa State |
| 1986 | Southern Utah | Southern Utah |
| 1985 | Western New Mexico | Western New Mexico |
| 1984 | Mesa State | Western New Mexico |
| 1983 | Mesa State | Mesa State |
| 1982 | Mesa State | Mesa State |
| 1981 | Southern Utah | Southern Utah |
| 1980 | Southern Colorado | No Tournament |
| 1979 | Mesa State | Mesa State |
| 1978 | Southern Utah | |
| 1977 | Mesa State | |
| 1976 | Southern Utah | |
| 1975 | Southern Utah | |
| 1974 | Adams State | |
| 1973 | Adams State | |
| * Mile High Intercollegiate Baseball League | ||
| Note: Baseball was not held as an RMAC sport in 1989 and 1991 | ||