This is a list of seasons played by Northampton Town Football Club in English football.
It details the club's achievements in all major competitions, together with the top scorers and the average attendances for each season.
Details of the abandoned 1939–40 season and unofficial Second World War leagues are not included.
Northampton Town were founded in 1897, joining the Northamptonshire League and then the Midland League for two seasons before taking their place in the Southern League, and finally joined The Football League for the 1920–21 season.
Top scorers shown in bold are Northampton Town who were also top scorers in their division that season.