| 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 | ||
| Kernan | A P | Juniors | NA | 7 January 1981 | Retired | 1984 | |
| Kerr | A G | Juniors | NA | 1 January 2001 | Worcester City | Released | 31 May 2002 |
| Kerr | R C | Heart of Midlothian [Sco] | Fee Unknown | cs1925 | Clapton Orient | Fee Unknown | 22 July 1927 |
| Ketsbaia | T | Newcastle United | £900,000 | 10 August 2000 | Dundee [Sco] | £500,000 | 17 October 2001 |
| Kightly | M J | Grays Athletic Grays Athletic |
Loan Small Fee |
23 November 2006 2 January 2007 |
Watford Stoke City |
Loan £1,800,000 |
11 October 2011 8 August 2012 |
| Kilman | M | Maidenhead United | Free | 9 August 2018 | West Ham United | £40,000,000 | 6 July 2024 |
| Kindon | S M | Burnley | £100,000 | 3 July 1972 | Burnley | £80,000 | 9 November 1977 |
| King | A E | Cambour [Hol] | Fee Unknown | 31 January 1985 | Luton Town | Fee Unknown | 6 December 1985 |
| King | F A R | Northampton Town | Fee Unknown | 25 November 1939 | Northampton Town Manchester City Northampton Town Manchester City Manchester City Manchester City Northampton Town |
Guest Guest Guest Guest Guest Guest Fee Unknown |
1941-42 1942-43 1942-43 1943-44 1944-45 1945-46 29 December 1947 |
| King | HW | Jarrow | Fee Unknown | 14 November 1920 | Walsall | Fee Unknown | 17 July 1931 |
| King | TL | Northampton Town | Free | 3 July 2023 | |||
| Kinsey | G | Mitchell St George | Fee Unknown | July 1891 | Aston Villa | Fee Unknown | 8 June 1894 |
| Kirkham | J | Ellesmere Port | Fee Unknown | 20 February 1936 | Bournemouth & Boscombe Athletic | Fee Unknown | 21 October 1938 |
| Kirkham | J | Bournemouth & Boscombe Athletic | Guest | 1944-45 | NA | ||
| Kirkham | J K | Juniors | NA | 21 May 1958 | Peterborough United | Fee Unknown | 15 November 1965 |
| Kirkham | R | Juniors | NA | 9 May 1939 | Southport Clapton Orient Southport Burnley |
Guest Guest Guest Fee Unknown |
1942-43 1943-44 1944-45 15 March 1947 |
| Knight | J | 1886 | 1887 | ||||
| Knight | T | Wednesbury Old Athletic | Fee Unknown | 1886 | Willenhall | Fee Unknown | 1890 |
| Knighton | K | Juniors | NA | 25 February 1961 | Oldham Athletic | £11,000 | 19 November 1966 |
| Knowles | P R | Juniors | NA | 11 October 1962 | Retired | September 1969 | |
| Kubicki | D J | Sunderland | Free | 6 August 1997 | Tranmere Rovers Carlisle United |
Loan Released |
3 March 1998 31 May 1998 |
| Kuszczak | T M | Brighton & Hove Albion | Unattached | 3 November 2014 | Birmingham City | Free | 1 July 2015 |
| Kyle | K A | Coventry City | Loan | 30 January 2008 | NA | ||
| Kyle | M | Juniors | NA | 22 September 1955 | Oxford United | Fee Unknown | July 1958 |
|
