| 24 Nov 11 | T. Priskin Tamas Priskin |  Ipswich TownIPS | → |  Derby CountyDER | Loan |
| 15 Nov 11 | T. Naylor Tom Naylor |  Mansfield TownMAN | → | Derby CountyDER | Loan |
| 04 Nov 11 | S. Pearson Stephen Pearson | Derby CountyDER | → |  Bristol CityBRC | Loan |
| 20 Sept 11 | S. Bywater Stephen Bywater | Derby CountyDER | → |  Sheffield WednesdaySHW | Loan |
| 13 Sept 11 | D. Martin David Martin | Derby CountyDER | → |  WalsallWAL | Loan |
| 12 Aug 11 | J. Severn James Severn | Derby CountyDER | → | ETXEastwood TownEastwood Town | Loan |
| 10 Aug 11 | C. Riggott Chris Riggott | XXX | → | Derby CountyDER | Free |
| 02 Aug 11 | K. Kilbane Kevin Kilbane |  Hull CityHUL | → | Derby CountyDER | Loan |
| 29 Jul 11 | R. Atkins Ross Atkins | Derby CountyDER | → |  Burton AlbionBRT | Loan |
| 15 Jul 11 | C. Porter Chris Porter | Derby CountyDER | → |  Sheffield UnitedSHU | Free |
| 07 Jul 11 | L. Varney Luke Varney | Derby CountyDER | → |  PortsmouthPOR | Undisclosed |
| 01 Jul 11 | A. Legzdins Adam Legzdins | Burton AlbionBRT | → | Derby CountyDER | Undisclosed |
| 01 Jul 11 | M. Addison Miles Addison | Derby CountyDER | → |  BarnsleyBAR | Loan |
| 01 Jul 11 | T. Robinson Theo Robinson |  MillwallMIL | → | Derby CountyDER | Undisclosed |
| 29 Jun 11 | C. Maguire Christopher Maguire |  AberdeenABER | → | Derby CountyDER | Undisclosed |
| 29 Jun 11 | C. Maguire Christopher Maguire | AberdeenABER | → | Derby CountyDER | Undisclosed |
| 21 Jun 11 | J. Shackell Jason Shackell | BarnsleyBAR | → | Derby CountyDER | Undisclosed |
| 13 Jun 11 | N. Tyson Nathan Tyson |  Nottingham ForestFOR | → | Derby CountyDER | Free |
| 09 Jun 11 | C. Bryson Craig Bryson |  KilmarnockKIL | → | Derby CountyDER | Undisclosed |
| 09 Jun 11 | C. Bryson Craig Bryson | KilmarnockKIL | → | Derby CountyDER | Undisclosed |
| 03 Jun 11 | B. Pringle Ben Pringle | Derby CountyDER | → |  Rotherham UnitedROT | Free |
| 09 May 11 | F. Fielding Frank Fielding |  Blackburn RoversBLK | → | Derby CountyDER | Undisclosed |
| 09 May 11 | J. Ward Jamie Ward | Sheffield UnitedSHU | → | Derby CountyDER | Undisclosed |
| 09 May 11 | F. Fielding Frank Fielding | Blackburn RoversBLK | → | Derby CountyDER | Undisclosed |
| 24 Mar 11 | B. Jones Brad Jones |  LiverpoolLIV | → | Derby CountyDER | Loan |
| 24 Mar 11 | B. Jones Brad Jones | LiverpoolLIV | → | Derby CountyDER | Loan |
| 04 Mar 11 | S. Bywater Stephen Bywater | Derby CountyDER | → |  Cardiff CityCAR | Loan |
| 04 Mar 11 | B. Pringle Ben Pringle | Derby CountyDER | → |  Torquay UnitedTQU | Loan |
| 04 Mar 11 | M. Duke Matt Duke | Hull CityHUL | → | Derby CountyDER | Loan |
| 25 Feb 11 | M. Boulding Michael Boulding | XXX | → | Derby CountyDER | Free |
| 25 Feb 11 | F. Fielding Frank Fielding | Blackburn RoversBLK | → | Derby CountyDER | Loan |
| 25 Feb 11 | F. Fielding Frank Fielding | Blackburn RoversBLK | → | Derby CountyDER | Loan |
| 22 Feb 11 | T. Robinson Theo Robinson | MillwallMIL | → | Derby CountyDER | Loan |
| 16 Feb 11 | J. Ward Jamie Ward | Sheffield UnitedSHU | → | Derby CountyDER | Loan |
| 11 Feb 11 | D. Ayala Daniel Ayala | LiverpoolLIV | → | Derby CountyDER | Loan |
| 11 Feb 11 | D. Ayala Daniel Ayala | LiverpoolLIV | → | Derby CountyDER | Loan |
| 31 Jan 11 | D. Moxey Dean Moxey | Derby CountyDER | → |  Crystal PalaceCRY | Undisclosed |
| 31 Jan 11 | M. Abalimba Medi Abalimba | Derby CountyDER | → |  Oldham AthleticOLD | Free |
| 31 Jan 11 | G. Mills Greg Mills | Derby CountyDER | → | ATUAFC Telford UnitedAFC Telford United | Loan |
| 28 Jan 11 | K. Commons Kris Commons | Derby CountyDER | → |  CelticCEL | Undisclosed |
| 28 Jan 11 | K. Commons Kris Commons | Derby CountyDER | → | CelticCEL | Undisclosed |
| 21 Jan 11 | D. Martin David Martin | Derby CountyDER | → |  Notts CountyNOTT | Loan |
| 20 Jan 11 | B. Davies Ben Davies | Notts CountyNOTT | → | Derby CountyDER | Undisclosed |