| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
| From | Cost | Date | To | Cost | Date | ||
| Iddon | H | Preston North End | Guest | 1944-45 | NA | ||
| Ihiekwe | M | Juniors | NA | 1 July 2013 | Cheltenham Town Tranmere Rovers |
Loan Free |
10 January 2014 18 June 2014 |
| Ikeme | C | Juniors | NA | 1 July 2003 | Accrington S (2) Stockport County Charlton Athletic Sheffield United QPR Leicester City Middlesbrough Doncaster Rovers Doncaster Rovers Retired |
Loan Loan Loan Loan Loan Loan Loan Loan Loan |
14 October 2004 31 August 2005 28 October 2009 26 November 2009 6 January 2010 27 August 2010 1 August 2011 18 November 2011 31 January 2012 1 July 2018 |
| Ince | P E C | Middlesbrough | Free | 6 August 2002 | Swindon Town | Free | 30 August 2006 |
| Ingimarsson | I | Brentford | Free | 1 July 2002 | Brighton & Hove A Reading |
Loan £100,000 |
11 February 2003 23 October 2003 |
| Iorfa | D | Juniors | NA | 1 July 2013 | Shrewsbury Town Ipswich Town Sheffield Wednesday |
Loan Loan Fee Unknown |
17 March 2014 14 July 2017 31 January 2019 |
| Irwin | J D | Manchester United | Free | 23 July 2002 | Retired | 1 August 2004 | |
| Isherwood | D | Juniors | NA | 22 September 1943 | Released | August 1944 | |
| Ismail | Z | Juniors | NA | 1 July 2012 | MK Dons Burton Albion Notts County Burton Albion Oxford United Cambridge United Bury |
Loan Loan Loan Loan Loan Loan Free |
22 November 2012 8 January 2014 18 July 2014 29 July 2015 1 February 2016 5 March 2016 1 July 2016 |
| Iversen | S | Tottenham Hotspur | Free | 1 August 2003 | Valerenga [Nor] | Free | 1 June 2004 |
| Iverson | R T J | Lincoln City | Fee Unknown | 22 February 1935 | Aston Villa | Free | 18 December 1936 |
| Ivill | E | Oldham Athletic | Fee Unknown | 7 November 1932 | Charlton Athletic | £1,700 | 20 January 1933 |
| Iwelumo | C R | Charlton Athletic | £468,000 | 14 July 2008 | Bristol City Burnley |
Loan £428,000 |
13 February 2010 1 June 2010 |