| 31 Aug 16 | C. Weale Chris Weale | XXX | → |  Derby CountyDER | Free |
| 31 Aug 16 | I. Anya Ikechi Anya |  WatfordWAT | → | Derby CountyDER | Undisclosed |
| 31 Aug 16 | I. Anya Ikechi Anya | WatfordWAT | → | Derby CountyDER | Undisclosed |
| 31 Aug 16 | J. Hendrick Jeff Hendrick | Derby CountyDER | → |  BurnleyBUR | Undisclosed |
| 31 Aug 16 | L. Grant Lee Grant | Derby CountyDER | → |  Stoke CitySTK | Loan |
| 31 Aug 16 | J. Hendrick Jeff Hendrick | Derby CountyDER | → | BurnleyBUR | Undisclosed |
| 31 Aug 16 | C. Martin Chris Martin | Derby CountyDER | → |  FulhamFUL | Loan |
| 31 Aug 16 | L. Grant Lee Grant | Derby CountyDER | → | Stoke CitySTK | Loan |
| 27 Aug 16 | M. Vydra Matej Vydra | WatfordWAT | → | Derby CountyDER | Undisclosed |
| 27 Aug 16 | M. Vydra Matej Vydra | WatfordWAT | → | Derby CountyDER | Undisclosed |
| 24 Aug 16 | K. Roos Kelle Roos | Derby CountyDER | → |  Bristol RoversBRI | Loan |
| 20 Aug 16 | J. Wilson James Wilson |  Manchester UnitedMAN | → | Derby CountyDER | Loan |
| 20 Aug 16 | J. Wilson James Wilson | Manchester UnitedMAN | → | Derby CountyDER | Loan |
| 26 Jul 16 | J. Buxton Jake Buxton | Derby CountyDER | → |  Wigan AthleticWGA | Undisclosed |
| 09 Jul 16 | R. Albentosa Raúl Albentosa | Derby CountyDER | → |  Deportivo La CoruñaDEP | Undisclosed |
| 09 Jul 16 | R. Albentosa Raúl Albentosa | Derby CountyDER | → | Deportivo La CoruñaDEP | Undisclosed |
| 01 Jul 16 | R. Shotton Ryan Shotton | Derby CountyDER | → |  Birmingham CityBIR | Undisclosed |
| 01 Jul 16 | S. Warnock Stephen Warnock | Derby CountyDER | → | Wigan AthleticWGA | Free |
| 07 Mar 16 | S. Warnock Stephen Warnock | Derby CountyDER | → | Wigan AthleticWGA | Loan |
| 05 Mar 16 | J. Mitchell Jonathan Mitchell | Derby CountyDER | → |  Luton TownLUT | Loan |
| 18 Feb 16 | C. Baird Chris Baird | Derby CountyDER | → | FulhamFUL | Loan |
| 01 Feb 16 | K. Roos Kelle Roos | Derby CountyDER | → |  AFC WimbledonWIM | Loan |
| 28 Jan 16 | R. Shotton Ryan Shotton | Derby CountyDER | → | Birmingham CityBIR | Loan |
| 26 Jan 16 | M. Olsson Markus Olsson |  Blackburn RoversBLK | → | Derby CountyDER | Undisclosed |
| 23 Jan 16 | O. Zanzala Offrande Zanzala | Derby CountyDER | → |  StevenageSTE | Loan |
| 20 Jan 16 | Lewis Walker | ITXIlkeston TownIlkeston Town | → | Derby CountyDER | Undisclosed |
| 20 Jan 16 | L. Thomas Luke Thomas |  Cheltenham TownCHL | → | Derby CountyDER | Undisclosed |
| 19 Jan 16 | A. Pearce Alex Pearce | Derby CountyDER | → |  Bristol CityBRC | Loan |
| 15 Jan 16 | M. Bennett Mason Bennett | Derby CountyDER | → |  Burton AlbionBRT | Loan |
| 06 Jan 16 | S. Dawkins Simon Dawkins | Derby CountyDER | → |  San Jose EarthquakesSJ | Undisclosed |
| 06 Jan 16 | N. Blackman Nick Blackman |  ReadingREA | → | Derby CountyDER | Undisclosed |
| 06 Jan 16 | S. Dawkins Simon Dawkins | Derby CountyDER | → | San Jose EarthquakesSJ | Undisclosed |
| 05 Jan 16 | A. Camara Abdoul Camara |  AngersANG | → | Derby CountyDER | Undisclosed |
| 05 Jan 16 | A. Camara Abdoul Camara | AngersANG | → | Derby CountyDER | Undisclosed |