Most College Football National Championship's by Decade
by Tex/1st-N-Goal
(Indiana)
1936-39: SWC: TCU, 1938 and Texas A&M, 1939
Independents: Pittsburgh, 1937
1940-49: Big 10: Minnesota, 1940-41; Ohio State, 1942; Michigan, 1948
Independents: Notre Dame, 1943-46-47-49; Army, 1944-45
1950-59: SEC: Tennessee, 1951; Auburn, 1957 and LSU, 1958
Big 7/8: Oklahoma, 1950-55-56
Independents: Michigan State, 1952 and Syracuse, 1959
Big 10: Ohio State, 1954-57; Iowa, 1958
ACC: Maryland, 1953
Pac 8: UCLA, 1954
1960-69: SWC: Texas 1963-69; Arkansas, 1964
SEC: Ole Miss, 1960; Alabama, 1961-64-65
Pac 8: USC, 1962-67
Big 10: Minnesota, 1960; Ohio State, 1961-68
Independents: Notre Dame, 1964-66
1970-79: Big 8: Nebraska, 1970-71; Oklahoma, 1974-75
Independents: Notre Dame, 1973-77; Pittsburgh, 1976
SWC: Texas, 1970
Big 10: Ohio State, 1970
Pac 8: USC. 1972-74
SEC: Alabama, 1978-79
1980-89: Independents: Penn State, 1982-86; Miami FL, 1983-87-89;
Notre Dame, 1988.
SEC: Georgia, 1980
ACC: Clemson, 1981
WAC: BYU, 1984
Big 8: OKlahoma, 1985
1990-99: SEC: Alabama, 1992; Florida, 1996 and Tennessee, 1998
ACC: Georgia Tech, 1990; Florida State, 1993-99
Big 8/12: Colorado, 1990; Nebraska 1994-95-97
Pac 10: Washington, 1991
Big East: Miami FL, 1991
2000-05: Big 12: Oklahoma, 2000 and Texas 2005
Pac 10: USC, 2003-04
Big East: Miami FL, 2001
Big 10: Ohio State, 2002
SEC: LSU, 2003 and 2007; Florida, 2006
*The above using Conference affiliations at the time
and NCAA Consensus: AP, UPI, USA Today, FWAA, NFFHF and BCS.
Here's supporting PDF's:
National Championships by Team Totals and Decade; Official All-Time National Championships List; Actual All-Time National Championships List.
For more info see Most College Football National Championships Within a Decade.
Here's a link to Tex Noel's book Stars of an Earlier Autumn.