| Sponsorship | |||||
| Year | The U's | Football League | FA Cup | League Cup | Associate Members Cup |
| 2012/13 | 75th Anniversary Sponsorship deal** | npower | Budweiser | Capital One | Johnstone's Paint |
| 2011/12 | Readers Offers Limited | npower | Budweiser | Carling | Johnstone's Paint |
| 2010/11 | Readers Offers Limited | npower | E-on Energy | Carling | Johnstone's Paint |
| 2009/10 | Weston Homes (h) / Jobserve (a) | Coca-Cola | E-on Energy | Carling | Johnstone's Paint |
| 2008/09 | Weston Homes (h) / Smart Energy (a) | Coca-Cola | E-on Energy | Carling | Johnstone's Paint |
| 2007/08 | Haart Estate Agents (h) / Smart Energy (a) | Coca-Cola | E-on Energy | Carling | Johnstone's Paint |
| 2006/07 | Mutual Points.com (h) / Smart Energy (a) | Coca-Cola | AXA | Carling | Johnstone's Paint |
| 2005/06 | Easy-Skip (h) / 188Trades.com (a) | Coca-Cola | AXA | Carling | - |
| 2004/05 | ICS Triplex | Coca-Cola | AXA | Carling | LDV Vans Trophy |
| 2003/04 | Tiptree Jams | Nationwide Building Society | AXA | Carling | LDV Vans Trophy |
| 2002/03 | Tiptree Jams | Nationwide Building Society | AXA | Worthington | LDV Vans Trophy |
| 2001/02 | Jobserve (h) / Ridleys Brewers (a) | Nationwide Building Society | AXA | Worthington | LDV Vans Trophy |
| 2000/01 | Jobserve (h) / Ridleys Brewers (a) | Nationwide Building Society | AXA | Worthington | LDV Vans Trophy |
| 1999/2000 | EADT (h) Ashby's Tea & Coffee (a) | Nationwide Building Society | Littlewoods | Worthington | Autoglass Windscreens |
| 1998/99 | Guardian Direct | Nationwide Building Society | Littlewoods | Worthington | Autoglass Windscreens |
| 1997/98 | Guardian Direct | Nationwide Building Society | Littlewoods | Coca-Cola | Autoglass Windscreens |
| 1996/97 | Goldstar Fabrications | Nationwide Building Society | Littlewoods | Coca-Cola | Autoglass Windscreens |
| 1995/96 | SGR Colchester | Endsleigh Insurance | - | Coca-Cola | Autoglass Windscreens |
| 1994/95 | SGR Colchester | Endsleigh Insurance | - | Coca-Cola | Autoglass Windscreens |
| 1993/94 | Strovers | Endsleigh Insurance | - | Rumbelows | Autoglass Windscreens |
| 1992/93 | The Sun | Barclays Bank | - | Rumbelows | Autoglass Windscreens |
| 1991/92 | Colchester Hippodrome / The Sun^ | GM Vauxhall Motors* | - | Rumbelows | Autoglass Windscreens |
| 1990/91 | Holimarine | GM Vauxhall Motors* | - | Rumbelows | Leyland DAF |
| 1989/90 | Norcross Estates | Barclays Bank | - | Littlewoods Pools | Leyland DAF |
| 1988/89 | Norcross Estates | Barclays Bank | - | Littlewoods Pools | Sherpa Van |
| 1987/88 | Norcross Estates | Barclays Bank | - | Littlewoods Pools | Freight Rover / Sherpa Van |
| 1986/87 | ? | Today Newspaper | - | Milk Marketing Board | Sherpa Van |
| 1985/86 | ? | Canon | - | Milk Marketing Board | Freight Rover |
| 1984/85 | Royal London Insurance | Canon | - | Milk Marketing Board | Freight Rover |
| 1983/84 | Royal London Insurance | - | - | Milk Marketing Board | |
| 1982/83 | Royal London Insurance | - | - | Milk Marketing Board | - |
| 1981/82 | Royal London Insurance | - | - | - | - |
| 1980/81 | Royal London Insurance | - | - | - | - |
| 1979/80 | Royal London Insurance | - | - | - | - |
| * This relates to the Conference rather than the Football League | |||||
| **A different sponsor for each match during the 2012/13 75th Anniversary season. | |||||
| ^ The Sun becomae the club sponsors for the FA Trophy Final only. The Colchester Hippodrome were the main club sponsors until then | |||||
| Can you fill in the missing gaps? Please email me | |||||