| P | # | Player | Born | Height | Weight | Contract | |
|---|---|---|---|---|---|---|---|
| GK | Ben Williams | 1982-08-27 | 183 | 83 | |||
| D | Danny Batth | 1990-09-21 | 191 | 85 | |||
| D | John White | 1986-07-25 | 183 | 70 | |||
| D | Magnus Okuonghae | 1986-02-16 | 191 | 84 | 2011 | ||
| D | Marc Tierney | 1985-08-23 | 183 | 71 | |||
| D | Paul Reid | 1982-02-18 | 188 | 73 | |||
| D | Philip Ifil | 1986-11-18 | 175 | 64 | |||
| M | Anthony Wordsworth | 1989-01-03 | 185 | 76 | |||
| M | David Fox | 1983-12-13 | 175 | 76 | |||
| M | Dean Hammond | 1983-03-07 | 183 | 74 | |||
| M | John O'Toole | 1988-09-30 | 185 | 85 | |||
| M | Kemal Izzet | 1980-09-29 | 173 | 66 | |||
| M | Simon Hackney | 1984-02-05 | 173 | 65 | |||
| F | Clive Platt | 1977-10-27 | 193 | 83 | |||
| F | Joel Thomas | 1987-06-30 | 185 | 78 | |||
| F | Kayode Odejayi | 1982-02-21 | 191 | 76 | |||
| F | Kevin Lisbie | 1978-10-17 | 178 | 69 | |||
| F | Medy Elito | 1990-07-20 | 180 | 69 | |||
| F | Steven Gillespie | 1985-06-04 | 175 | 71 |
| Date | Player | From | To | Status | Src |
|---|---|---|---|---|---|
| 30.Jun | Glen Kamara (M) | Colchester United | Arsenal FC | Confirmed | |
| 18.Nov | George Moncur (M) | West Ham United | Colchester United | Confirmed | |
| 8.Aug | George Moncur (M) | West Ham United | Colchester United | Confirmed | |
| 24.Nov | Tom Aldred (D) | Colchester United | Torquay United | Confirmed | |
| 4.Nov | Casey Thomas (F) | Swansea City | Colchester United | Confirmed | |
| 31.Mar | Freddie Ladapo (F) | Colchester United | Chelmsford City FC | Confirmed | |
| 17.Mar | Tommy Smith (D) | Ipswich Town | Colchester United | Confirmed | |
| 25.Feb | Medy Elito (F) | Colchester United | Cheltenham Town | Confirmed | |
| 1.Oct | Tom Williams (M) | Bristol City | Colchester United | Confirmed | |
| 14.Sep | Liam Henderson (F) | Watford FC | Colchester United | Confirmed |