| 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 | ||
| Masters | N B | Bournemouth | £300,000 | 22 December 1993 | Gillingham | £150,000 | 1 August 1997 |
| Matheson | L A | Rochdale | £990,000 | 31 January 2020 | Rochdale Ipswich Town Hamilton A [Sco] Scunthorpe United Bolton Wanderers |
Loan Loan Loan Loan Released |
1 February 2020 1 February 2021 27 August 2021 15 January 2022 1 July 2023 |
| Matthews | M | Juniors | NA | 10 October 1978 | Scunthorpe United Scunthorpe United |
Loan £5,000 |
December 1983 February 1984 |
| Matthias | J | Shrewsbury Town | Fee Unknown | 1 May 1897 | Wrexham | Fee Unknown | cs1901 |
| Mautone | S | Reading | Free | 6 August 1999 | Crystal Palace | Free | 25 September 1999 |
| May | G T | Redditch | Fee Unknown | 2 May 1908 | Nuneaton Town | Fee Unknown | May 1910 |
| Mayson | T F | Everton | Fee Unknown | 26 May 1921 | Aberdare Athletic | Fee Unknown | 23 June 1922 |
| McAlinden | L J | Juniors | NA | 1 July 2012 | Shrewsbury Town Fleetwood Fleetwood Shrewsbury Town Crawley Town Exeter City |
Loan Loan Loan Loan Loan Free |
10 October 2013 2 October 2014 15 January 2015 9 July 2015 10 March 2016 1 July 2016 |
| McAlle | J E | Juniors | NA | 20 February 1967 | Sheffield United | £10,000 | 28 August 1981 |
| McAloon | G P | Brentford | Fee Unknown | 16 March 1939 | Brentford | Fee Unknown | 24 December 1945 |
| McBride | J | Kilmarnock [Sco] | £12,500 | 26 November 1959 | Luton Town | £12,500 | 26 February 1961 |
| McCall | W | Blackburn Rovers | Fee Unknown | 20 June 1922 | Southampton | Fee Unknown | 26 January 1923 |
| McCalliog | J | Sheffield Wednesday | £70,000 | 2 August 1969 | Manchester United | £60,000 | 14 March 1974 |
| McCarey | A | Juniors | NA | 1 July 2012 | Walsall Walsall York City Portsmouth Bury Ross County |
Loan Loan Loan Loan Loan Free |
1 November 2012 21 February 2013 28 November 2013 23 September 2015 23 October 2015 1 July 2016 |
| McCarthy | B | Chester | Fee Unknown | 10 June 1938 | Reading | Fee Unknown | 26 August 1938 |
| McCloy | B | Juniors | NA | 1 August 1996 | Airdie (1) | Free | 30 July 1997 |
| McCormack | J | Tottenham Hotspur | Guest | 1941-42 | NA | ||
| McDonald | I | Juniors | NA | 28 August 1968 | Darlington | Fee Unknown | 9 September 1970 |
| McDonald | J C | Juniors Bournemouth BA |
NA Guest |
1 September 1938 1941-42 |
Bournemouth & Boscombe Athletic | Fee Unknown | 9 May 1939 |
| McDonald | K D | Sheffield United | £810,000 | 14 August 2013 | Fulham | £1,350,000 | 22 July 2017 |
| McDonald | R W | Leeds United | Loan | 19 February 1988 | NA | ||
| McDonald | T | Hibernian [Sco] | Fee Unknown | 6 April 1954 | Leicester City | £6,500 | 5 July 1956 |
| McDougall | A L | Wishaw Juniors [Sco] | Fee Unknown | 10 February 1925 | Derby County | Fee Unknown | 6 August 1928 |
| McEvoy | J | Dundalk [RoI] | Fee Unknown | 19 December 1947 | Cork City [RoI] | Fee Unknown | 1948 |
| McGarvey | S | Manchester United | Loan | 1 March 1984 | NA | ||
| McIlmoyle | H | Carlisle United | Fee Unknown | 23 October 1964 | Bristol City | £27,500 | 1 March 1967 |
| McIndoe | M | Barnsley | £250,000 | 1 January 2007 | Bristol City | Free | 1 August 2007 |
| McIntosh | A | Folkestone Town | £500 | 20 October 1937 | Birmingham City | Fee Unknown | 24 January 1947 |
| McLean | A | Aberystwyth | Fee Unknown | 23 September 1942 | Bromsgrove Rovers | Fee Unknown | May 1951 |
| McLoughlin | P B | Hereford United | £45,000 | June 1989 | Walsall York City Mansfield Town |
Loan Loan £35,000 |
5 September 1991 10 January 1992 17 January 1992 |
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