- Source: 1909 Southern Intercollegiate Athletic Association football season
- 1909 Southern Intercollegiate Athletic Association football season
- Southern Intercollegiate Athletic Association
- 1910 Southern Intercollegiate Athletic Association football season
- 1908 Southern Intercollegiate Athletic Association football season
- Mid-America Intercollegiate Athletics Association
- 1909 Alabama Crimson Tide football team
- 1909 Clemson Tigers football team
- 1909 Sewanee Tigers football team
- 1909 The Citadel Bulldogs football team
- 1909 Howard Crimson and Blue football team
The 1909 Southern Intercollegiate Athletic Association football season was the college football games played by the member schools of the Southern Intercollegiate Athletic Association as part of the 1909 college football season. The season began on September 25.
Under head coach Harris G. Cope, Sewanee won its last conference title in major college football. Sewanee gave Vanderbilt its first loss to a Southern team in six years, and was the first Sewanee squad to win a title since the 1899 Iron Men.
When the Kentucky team was welcomed home after the upset win over Illinois, Philip Carbusier said that they had "fought like wildcats", a nickname that stuck.
President Taft showed up for the Sewanee-LSU game. LSU was led by Hall of Fame quarterback Doc Fenton.
Results and team statistics
Key
PPG = Average of points scored per game
PAG = Average of points allowed per game
Regular season
SIAA teams in bold.
= Week One
== Week Two
== Week Three
== Week Four
== Week Five
== Week Six
== Week Seven
== Week Eight
== Week Nine
== Week Ten
=Awards and honors
= All-Southern team
=John Heisman's All-Southern team included: