| 29 Oct 10 | A. Reid Andy Reid |  SunderlandSUN | → |  Sheffield UnitedSHU | Loan |
| 29 Oct 10 | A. Reid Andy Reid | SunderlandSUN | → | Sheffield UnitedSHU | Loan |
| 06 Oct 10 | M. Aksalu Mihkel Aksalu | Sheffield UnitedSHU | → |  Mansfield TownMAN | Loan |
| 24 Sept 10 | R. de Laet Ritchie de Laet |  Manchester UnitedMAN | → | Sheffield UnitedSHU | Loan |
| 24 Sept 10 | R. de Laet Ritchie de Laet | Manchester UnitedMAN | → | Sheffield UnitedSHU | Loan |
| 21 Sept 10 | R. Wright Richard Wright | XXX | → | Sheffield UnitedSHU | Free |
| 23 Aug 10 | J. Calve Jean Calvé |  AS Nancy LorraineASNL | → | Sheffield UnitedSHU | Loan |
| 23 Aug 10 | J. Calve Jean Calvé | AS Nancy LorraineASNL | → | Sheffield UnitedSHU | Loan |
| 10 Aug 10 | K. Bartley Kyle Bartley |  ArsenalARS | → | Sheffield UnitedSHU | Loan |
| 10 Aug 10 | K. Bartley Kyle Bartley | ArsenalARS | → | Sheffield UnitedSHU | Loan |
| 09 Aug 10 | S. Jordan Stephen Jordan | XXX | → | Sheffield UnitedSHU | Free |
| 21 Jul 10 | N. Nosworthy Nyron Nosworthy | SunderlandSUN | → | Sheffield UnitedSHU | Loan |
| 21 Jul 10 | N. Nosworthy Nyron Nosworthy | SunderlandSUN | → | Sheffield UnitedSHU | Loan |
| 16 Jul 10 | K. Reid Kyel Reid | Sheffield UnitedSHU | → |  Charlton AthleticCHA | Free |
| 07 Jul 10 | B. Sharp Billy Sharp | Sheffield UnitedSHU | → |  Doncaster RoversDON | 1150000 |
| 06 Jul 10 | S. Walton Simon Walton |  Plymouth ArgylePLY | → | Sheffield UnitedSHU | Loan |
| 02 Jul 10 | S. Simonsen Steve Simonsen |  Stoke CitySTK | → | Sheffield UnitedSHU | Free |
| 02 Jul 10 | S. Simonsen Steve Simonsen | Stoke CitySTK | → | Sheffield UnitedSHU | Free |
| 01 Jul 10 | I. Bennett Ian Bennett | Sheffield UnitedSHU | → |  Huddersfield TownHUD | Free |
| 01 Jul 10 | G. Naysmith Gary Naysmith | Sheffield UnitedSHU | → | Huddersfield TownHUD | Free |
| 01 Jul 10 | J. Ertl Johannes Ertl |  Crystal PalaceCRY | → | Sheffield UnitedSHU | Free |
| 01 Jul 10 | D. Bogdanovic Daniel Bogdanovic |  BarnsleyBAR | → | Sheffield UnitedSHU | Free |
| 22 Jun 10 | J. Stewart Jordan Stewart | Sheffield UnitedSHU | → |  FC XanthiXAN | Free |
| 07 Jun 10 | P. Kenny Patrick Kenny | Sheffield UnitedSHU | → |  Queens Park RangersQPR | Undisclosed |
| 19 Mar 10 | S. Simonsen Steve Simonsen | Stoke CitySTK | → | Sheffield UnitedSHU | Loan |
| 19 Mar 10 | S. Simonsen Steve Simonsen | Stoke CitySTK | → | Sheffield UnitedSHU | Loan |
| 16 Mar 10 | P. Connolly Paul Connolly |  Derby CountyDER | → | Sheffield UnitedSHU | Loan |
| 09 Feb 10 | K. Bartley Kyle Bartley | ArsenalARS | → | Sheffield UnitedSHU | Loan |
| 09 Feb 10 | K. Bartley Kyle Bartley | ArsenalARS | → | Sheffield UnitedSHU | Loan |
| 01 Feb 10 | N. Nosworthy Nyron Nosworthy | SunderlandSUN | → | Sheffield UnitedSHU | Loan |
| 01 Feb 10 | N. Nosworthy Nyron Nosworthy | SunderlandSUN | → | Sheffield UnitedSHU | Loan |
| 01 Feb 10 | T. Kallio Toni Kallio |  FulhamFUL | → | Sheffield UnitedSHU | Loan |
| 01 Feb 10 | T. Kallio Toni Kallio | FulhamFUL | → | Sheffield UnitedSHU | Loan |
| 30 Jan 10 | M. Aksalu Mihkel Aksalu | FFTFC Flora TallinnFC Flora Tallinn | → | Sheffield UnitedSHU | Undisclosed |
| 29 Jan 10 | K. Reid Kyel Reid | Sheffield UnitedSHU | → | Charlton AthleticCHA | Loan |
| 28 Jan 10 | J. Harper James Harper |  ReadingREA | → | Sheffield UnitedSHU | Undisclosed |
| 21 Jan 10 | M. Kilgallon Matthew Kilgallon | Sheffield UnitedSHU | → | SunderlandSUN | Undisclosed |
| 21 Jan 10 | M. Kilgallon Matthew Kilgallon | Sheffield UnitedSHU | → | SunderlandSUN | Undisclosed |
| 19 Jan 10 | M. Yeates Mark Yeates |  MiddlesbroughMID | → | Sheffield UnitedSHU | Undisclosed |
| 07 Jan 10 | D. Cotterill David Cotterill | Sheffield UnitedSHU | → |  Swansea CitySWA | 600000 |
| 05 Jan 10 | R. Cresswell Richard Cresswell | Stoke CitySTK | → | Sheffield UnitedSHU | Undisclosed |
| 05 Jan 10 | R. Cresswell Richard Cresswell | Stoke CitySTK | → | Sheffield UnitedSHU | Undisclosed |
| 01 Jan 10 | M. Seip Marcel Seip | Plymouth ArgylePLY | → | Sheffield UnitedSHU | Loan |