| 31 Aug 18 | V. Anita Vurnon Anita |  Leeds UnitedLEE | → |  Willem IIWIL | Loan |
| 31 Aug 18 | V. Anita Vurnon Anita | Leeds UnitedLEE | → | Willem IIWIL | Loan |
| 31 Aug 18 | E. O'Kane Eunan O'Kane | Leeds UnitedLEE | → |  Luton TownLUT | Loan |
| 30 Aug 18 | I. Brown Isaiah Brown |  ChelseaCHE | → | Leeds UnitedLEE | Loan |
| 30 Aug 18 | I. Brown Isaiah Brown | ChelseaCHE | → | Leeds UnitedLEE | Loan |
| 29 Aug 18 | C. Ekuban Caleb Ekuban | Leeds UnitedLEE | → |  TrabzonsporTRAB | Loan |
| 21 Aug 18 | L. De Bock Laurens De Bock | Leeds UnitedLEE | → |  KV OostendeKVO | Loan |
| 21 Aug 18 | Y. Ideguchi Yosuke Ideguchi | Leeds UnitedLEE | → |  SpVgg Greuther FurthFUR | Loan |
| 02 Aug 18 | A. Lonergan Andy Lonergan | Leeds UnitedLEE | → |  MiddlesbroughMID | Free |
| 02 Aug 18 | L. Murphy Luke Murphy | Leeds UnitedLEE | → |  Bolton WanderersBOL | Loan |
| 02 Aug 18 | L. Murphy Luke Murphy | Leeds UnitedLEE | → | Bolton WanderersBOL | Free |
| 01 Aug 18 | R. Vieira Ronaldo Vieira | Leeds UnitedLEE | → |  SampdoriaSAM | Undisclosed |
| 01 Aug 18 | R. Vieira Ronaldo Vieira | Leeds UnitedLEE | → | SampdoriaSAM | Undisclosed |
| 31 Jul 18 | P. Bamford Patrick Bamford | MiddlesbroughMID | → | Leeds UnitedLEE | Undisclosed |
| 31 Jul 18 | H. Sacko Hadi Sacko | Leeds UnitedLEE | → |  Las PalmasLPA | Loan |
| 30 Jul 18 | J. Harrison Jack Harrison |  Manchester CityMNC | → | Leeds UnitedLEE | Loan |
| 30 Jul 18 | J. Harrison Jack Harrison | Manchester CityMNC | → | Leeds UnitedLEE | Loan |
| 28 Jul 18 | B. Douglas Barry Douglas |  Wolverhampton WanderersWOL | → | Leeds UnitedLEE | Undisclosed |
| 28 Jul 18 | B. Douglas Barry Douglas | Wolverhampton WanderersWOL | → | Leeds UnitedLEE | Undisclosed |
| 16 Jul 18 | J. Blackman Jamal Blackman | ChelseaCHE | → | Leeds UnitedLEE | Loan |
| 16 Jul 18 | J. Blackman Jamal Blackman | ChelseaCHE | → | Leeds UnitedLEE | Loan |
| 06 Jul 18 | T. Denton Tyler Denton | Leeds UnitedLEE | → |  Peterborough UnitedPET | Loan |
| 06 Jul 18 | P. O'Conner Paudie O'Conner | Leeds UnitedLEE | → |  BlackpoolBLP | Loan |
| 05 Jul 18 | J. Grot Jay-Roy Grot | Leeds UnitedLEE | → |  VVV-VenloVVV | Loan |
| 05 Jul 18 | J. Grot Jay-Roy Grot | Leeds UnitedLEE | → | VVV-VenloVVV | Loan |
| 03 Jul 18 | P. Cibicki Pawel Cibicki | Leeds UnitedLEE | → |  MoldeMOL | Loan |
| 01 Jul 18 | L. Coyle Lewie Coyle | Leeds UnitedLEE | → |  Fleetwood TownFLE | Loan |
| 01 Jul 18 | L. Baker Lewis Baker | ChelseaCHE | → | Leeds UnitedLEE | Loan |
| 01 Jul 18 | L. Baker Lewis Baker | ChelseaCHE | → | Leeds UnitedLEE | Loan |
| 19 Jun 18 | F. Wiedwald Felix Wiedwald | Leeds UnitedLEE | → |  Eintracht FrankfurtSGE | Undisclosed |
| 19 Jun 18 | F. Wiedwald Felix Wiedwald | Leeds UnitedLEE | → | Eintracht FrankfurtSGE | Undisclosed |
| 11 Jun 18 | M. Gomes Madger Gomes | Leeds UnitedLEE | → |  SochauxSOC | Undisclosed |
| 31 Jan 18 | T. Roberts Tyler Roberts |  West Bromwich AlbionWBA | → | Leeds UnitedLEE | Undisclosed |
| 31 Jan 18 | J. Stevens Jordan Stevens |  Forest Green RoversFGR | → | Leeds UnitedLEE | Undisclosed |
| 31 Jan 18 | T. Roberts Tyler Roberts | West Bromwich AlbionWBA | → | Leeds UnitedLEE | Undisclosed |
| 29 Jan 18 | P. Struijk Pascal Struijk |  Ajax AmsterdamAJA | → | Leeds UnitedLEE | Undisclosed |
| 29 Jan 18 | P. Struijk Pascal Struijk | Ajax AmsterdamAJA | → | Leeds UnitedLEE | Undisclosed |
| 26 Jan 18 | M. Wilks Mallik Wilks | Leeds UnitedLEE | → |  Grimsby TownGRI | Loan |
| 22 Jan 18 | M. Klich Mateusz Klich | Leeds UnitedLEE | → |  FC UtrechtUTR | Loan |
| 22 Jan 18 | M. Klich Mateusz Klich | Leeds UnitedLEE | → | FC UtrechtUTR | Loan |
| 18 Jan 18 | A. Forshaw Adam Forshaw | MiddlesbroughMID | → | Leeds UnitedLEE | 4500000 |
| 11 Jan 18 | L. De Bock Laurens De Bock |  Club BruggeBRUG | → | Leeds UnitedLEE | Undisclosed |
| 09 Jan 18 | Y. Ideguchi Yosuke Ideguchi |  Gamba OsakaGAM | → | Leeds UnitedLEE | Undisclosed |
| 09 Jan 18 | Y. Ideguchi Yosuke Ideguchi | Leeds UnitedLEE | → | CLXCultural LeonesaCLE | Loan |
| 05 Jan 18 | Yuta Toyokawa | FOXFagiano OkayamaFagiano Okayama | → | Leeds UnitedLEE | Undisclosed |
| 05 Jan 18 | Yuta Toyokawa | Leeds UnitedLEE | → |  EupenEUP | Loan |