| 1936-37
|
Southern
League Champions |
| 1953-54
|
Football
League Division 3 (South) Champions |
| 1956-57
|
Football
League Division 3 (South) Champions |
| 1960-61
|
Football
League Division 2 Champions |
| 1961-62
|
Football
League Division 1 Champions |
| 1967-68
|
Football
League Division 2 Champions |
| 1972-73
|
Texaco
Cup Winners |
|
|
FA
Youth Cup Winners |
| 1974-75
|
FA Youth
Cup Winners |
| 1977-78
|
FA
Cup Winners |
| 1980-81
|
Football
League Division 1 Runners-Up |
|
UEFA
Cup Winners |
| 1981-82
|
Football
League Division 1 Runners-Up |
| 1991-92
|
Football
League Division 2 Champions |
| 1999-00
|
Football
League Division 1 Play-off Winners |
| 2004-05
|
FA Youth Cup Winners |
| 1886-87
|
Suffolk
Challenge Cup Winners |
| 1888-89
|
Suffolk
Challenge Cup Winners |
| 1889-90
|
Suffolk
Challenge Cup Winners |
| 1895-96
|
Suffolk
Senior Cup Winners |
| 1896-97
|
Ipswich
Charity Cup Winners |
| 1897-98
|
Ipswich
Charity Cup Winners |
| 1898-99
|
Ipswich
Charity Cup Winners |
| 1899-00
|
Suffolk
Senior Cup Winners |
|
Ipswich
Charity Cup Winners |
| 1902-03
|
Norfolk
& Suffolk League Runners-Up |
| 1903-04
|
Suffolk
Senior Cup Winners |
|
South
East Anglian League Champions |
| 1904-05
|
Suffolk
Senior Cup Winners |
|
South
East Anglian League Runners-Up |
| 1905-06
|
Suffolk
Senior Cup Winners |
| 1906-07
|
Suffolk
Senior Cup Winners |
| 1907-08
|
Suffolk
Senior Cup Winners |
| 1911-12
|
Suffolk
Senior Cup Winners |
| 1912-13
|
Suffolk
Senior Cup Winners |
| 1921-22
|
Southern
Amateur League Champions |
| 1922-23
|
Southern
Amateur League Runners-Up |
| 1927-28
|
AFA
Cup Finalists |
|
Suffolk
Senior Cup Winners |
| 1928-29
|
Suffolk
Senior Cup Winners |
| 1929-30
|
Suffolk
Senior Cup Winners |
|
Ipswich
Hospital Cup Winners |
|
Southern
Amateur League Champions |
| 1930-31
|
Ipswich
Hospital Cup Winners |
|
Southern
Amateur League Runners-Up |
| 1932-33
|
Ipswich
Hospital Cup Winners |
|
Southern
Amateur League Champions |
| 1933-34
|
Southern
Amateur League Champions |