| 14 Sept 17 | Frederik Nielsen | XXX | → |  Sheffield WednesdaySHW | Free |
| 31 Aug 17 | J. Butterfield Jacob Butterfield |  Derby CountyDER | → | Sheffield WednesdaySHW | Loan |
| 31 Aug 17 | S. Clare Sean Clare | Sheffield WednesdaySHW | → |  GillinghamGIL | Loan |
| 31 Aug 17 | S. Winnall Sam Winnall | Sheffield WednesdaySHW | → | Derby CountyDER | Loan |
| 30 Aug 17 | J. van Aken Joost van Aken |  HeerenveenHEE | → | Sheffield WednesdaySHW | Undisclosed |
| 30 Aug 17 | J. van Aken Joost van Aken | HeerenveenHEE | → | Sheffield WednesdaySHW | Undisclosed |
| 29 Aug 17 | Jordan Thorniley | Sheffield WednesdaySHW | → |  Accrington StanleyACCR | Loan |
| 17 Aug 17 | J. Stobbs Jack Stobbs | Sheffield WednesdaySHW | → |  Port ValeVALE | Loan |
| 16 Aug 17 | F. Venâncio Frederico Venâncio |  Vitoria SetubalSET | → | Sheffield WednesdaySHW | Loan |
| 10 Jul 17 | F. Melo Filipe Melo | Sheffield WednesdaySHW | → |  GD ChavesGDC | Undisclosed |
| 03 Jul 17 | G. Boyd George Boyd |  BurnleyBUR | → | Sheffield WednesdaySHW | Free |
| 03 Jul 17 | G. Boyd George Boyd | BurnleyBUR | → | Sheffield WednesdaySHW | Free |
| 01 Jul 17 | J. Rhodes Jordan Rhodes |  MiddlesbroughMID | → | Sheffield WednesdaySHW | Undisclosed |
| 01 Jul 17 | Conor Grant |  Shamrock RoversSHAM | → | Sheffield WednesdaySHW | Undisclosed |
| 01 Jul 17 | J. Rhodes Jordan Rhodes | MiddlesbroughMID | → | Sheffield WednesdaySHW | Undisclosed |
| 06 Feb 17 | C. Dielna Claude Dielna | Sheffield WednesdaySHW | → |  Dinamo BucurestiDBUC | Loan |
| 31 Jan 17 | M. Sougou Modou Sougou | Sheffield WednesdaySHW | → |  MoreirenseMOR | Loan |
| 31 Jan 17 | J. Rhodes Jordan Rhodes | MiddlesbroughMID | → | Sheffield WednesdaySHW | Loan |
| 31 Jan 17 | Matthew Penny | Sheffield WednesdaySHW | → |  Bradford CityBRD | Loan |
| 31 Jan 17 | J. Rhodes Jordan Rhodes | MiddlesbroughMID | → | Sheffield WednesdaySHW | Loan |
| 30 Jan 17 | L. João Lucas João | Sheffield WednesdaySHW | → |  Blackburn RoversBLK | Loan |
| 20 Jan 17 | S. Clare Sean Clare | Sheffield WednesdaySHW | → | Accrington StanleyACCR | Loan |
| 18 Jan 17 | F. Melo Filipe Melo | Sheffield WednesdaySHW | → |  Paços de FerreiraPFC | Loan |
| 13 Jan 17 | S. Winnall Sam Winnall |  BarnsleyBAR | → | Sheffield WednesdaySHW | Undisclosed |
| 12 Jan 17 | S. Bus Sergiu Bus | Sheffield WednesdaySHW | → |  FK Astra GiurgiuASTR | Undisclosed |
| 06 Jan 17 | M. Fox Morgan Fox |  Charlton AthleticCHA | → | Sheffield WednesdaySHW | Undisclosed |
| 06 Jan 17 | Devante Rodney | Sheffield WednesdaySHW | → |  Hartlepool UnitedHAR | Undisclosed |
| 01 Jan 17 | J. Kean Jake Kean | Sheffield WednesdaySHW | → |  Mansfield TownMAN | Loan |
| 01 Jan 17 | C. McManaman Callum McManaman |  West Bromwich AlbionWBA | → | Sheffield WednesdaySHW | Loan |
| 01 Jan 17 | C. McManaman Callum McManaman | West Bromwich AlbionWBA | → | Sheffield WednesdaySHW | Loan |