| 22 Nov 12 | D. Stockdale David Stockdale |  FulhamFUL | → |  Hull CityHUL | Loan |
| 22 Nov 12 | D. Stockdale David Stockdale | FulhamFUL | → | Hull CityHUL | Loan |
| 20 Nov 12 | C. Townsend Conor Townsend | Hull CityHUL | → |  ChesterfieldCHES | Loan |
| 08 Nov 12 | D. Meyler David Meyler |  SunderlandSUN | → | Hull CityHUL | Loan |
| 08 Nov 12 | D. Meyler David Meyler | SunderlandSUN | → | Hull CityHUL | Loan |
| 06 Nov 12 | R. Brady Robbie Brady |  Manchester UnitedMAN | → | Hull CityHUL | Loan |
| 06 Nov 12 | R. Brady Robbie Brady | Manchester UnitedMAN | → | Hull CityHUL | Loan |
| 01 Nov 12 | J. Devitt Jamie Devitt | Hull CityHUL | → |  Rotherham UnitedROT | Loan |
| 01 Nov 12 | L. Cooper Liam Cooper | Hull CityHUL | → | ChesterfieldCHES | Loan |
| 26 Oct 12 | M. Oxley Mark Oxley | Hull CityHUL | → |  Burton AlbionBRT | Loan |
| 31 Aug 12 | C. Stewart Cameron Stewart | Hull CityHUL | → |  BurnleyBUR | Loan |
| 31 Aug 12 | S. Quinn Stephen Quinn |  Sheffield UnitedSHU | → | Hull CityHUL | Undisclosed |
| 30 Aug 12 | A. Elmohamady Ahmed Elmohamady | SunderlandSUN | → | Hull CityHUL | Loan |
| 30 Aug 12 | A. Elmohamady Ahmed Elmohamady | SunderlandSUN | → | Hull CityHUL | Loan |
| 29 Aug 12 | D. East Danny East | Hull CityHUL | → |  Northampton TownNHT | Loan |
| 10 Aug 12 | M. Cullen Mark Cullen | Hull CityHUL | → |  BuryBURY | Loan |
| 07 Aug 12 | S. Bradley Sonny Bradley | Hull CityHUL | → |  Aldershot TownALD | Loan |
| 31 Jul 12 | B. Amos Ben Amos | Manchester UnitedMAN | → | Hull CityHUL | Loan |
| 31 Jul 12 | B. Amos Ben Amos | Manchester UnitedMAN | → | Hull CityHUL | Loan |
| 30 Jul 12 | A. Bruce Alex Bruce |  Leeds UnitedLEE | → | Hull CityHUL | Free |
| 25 Jul 12 | S. Aluko Sone Aluko | XXX | → | Hull CityHUL | Free |
| 20 Jul 12 | A. Faye Abdoulaye Faye |  West Ham UnitedWHU | → | Hull CityHUL | Free |
| 20 Jul 12 | A. Faye Abdoulaye Faye | West Ham UnitedWHU | → | Hull CityHUL | Free |
| 19 Jul 12 | N. Proschwitz Nick Proschwitz |  SC Paderborn 07PAD | → | Hull CityHUL | 2575000 |
| 19 Jul 12 | N. Proschwitz Nick Proschwitz | SC Paderborn 07PAD | → | Hull CityHUL | Undisclosed |
| 09 Jul 12 | E. Jakupovic Eldin Jakupovic |  Aris SalonikaAris Salonik | → | Hull CityHUL | Free |
| 05 Jul 12 | K. Kilbane Kevin Kilbane | Hull CityHUL | → |  Coventry CityCOV | Free |
| 03 Jul 12 | W. Atkinson Will Atkinson | Hull CityHUL | → |  Bradford CityBRD | Free |
| 20 Mar 12 | D. Adebola Dele Adebola | Hull CityHUL | → |  Notts CountyNOTT | Loan |
| 17 Feb 12 | J. Devitt Jamie Devitt | Hull CityHUL | → |  Accrington StanleyACCR | Loan |
| 26 Jan 12 | W. Atkinson Will Atkinson | Hull CityHUL | → | Bradford CityBRD | Loan |
| 24 Jan 12 | J. Harper James Harper | Hull CityHUL | → |  Wycombe WanderersWYC | Loan |
| 17 Jan 12 | M. Mainwaring Matty Mainwaring | Hull CityHUL | → |  Stockport CountySTO | Loan |
| 16 Jan 12 | J. King Joshua King | Manchester UnitedMAN | → | Hull CityHUL | Loan |
| 16 Jan 12 | J. King Joshua King | Manchester UnitedMAN | → | Hull CityHUL | Loan |
| 13 Jan 12 | T. Carson Trevor Carson | SunderlandSUN | → | Hull CityHUL | Loan |
| 13 Jan 12 | P. McShane Paul McShane | Hull CityHUL | → |  Crystal PalaceCRY | Loan |
| 13 Jan 12 | T. Carson Trevor Carson | SunderlandSUN | → | Hull CityHUL | Loan |
| 06 Jan 12 | S. Bradley Sonny Bradley | Hull CityHUL | → | Aldershot TownALD | Loan |
| 04 Jan 12 | V. Mannone Vito Mannone |  ArsenalARS | → | Hull CityHUL | Loan |
| 04 Jan 12 | V. Mannone Vito Mannone | ArsenalARS | → | Hull CityHUL | Loan |