The 1903 LSU Tigers football team represented the LSU of Louisiana State University during the 1903 Southern Intercollegiate Athletic Association football season. 1903 was W. S. Borland's third and final season as LSU head coach as he finished 4–5 for the season. The 1903 season broke the previous season's record for most games played (seven) with nine games. The Tigers played four home games; three in Baton Rouge and one in New Orleans, but were on the road the rest of the season. For the 1903 season, point values were different from those used in contemporary games. In 1903 a touchdown was worth five points, a field goal was worth five points and a conversion (PAT) was worth one point.

The LSU Tigers football program, also known as the Fighting Tigers, represents Louisiana State University in college football. The Tigers compete in the Football Bowl Subdivision (FBS) of the National Collegiate Athletic Association (NCAA) and the Western Division of the Southeastern Conference (SEC).