| 02 Sept 19 | F. Andone Florin Andone |  Brighton & Hove AlbionBHA | → |  GalatasarayGAL | Loan |
| 08 Aug 19 | A. Mooy Aaron Mooy |  Huddersfield TownHUD | → | Brighton & Hove AlbionBHA | Loan |
| 08 Aug 19 | A. Mooy Aaron Mooy | Huddersfield TownHUD | → | Brighton & Hove AlbionBHA | Loan |
| 08 Aug 19 | B. Kiyal Biram Kiyal | Brighton & Hove AlbionBHA | → |  Charlton AthleticCHA | Loan |
| 08 Aug 19 | R. Yapi Romaric Yapi |  Paris Saint-Germain PSG | → | Brighton & Hove AlbionBHA | Undisclosed |
| 08 Aug 19 | B. Kiyal Biram Kiyal | Brighton & Hove AlbionBHA | → | Charlton AthleticCHA | Loan |
| 08 Aug 19 | R. Yapi Romaric Yapi | Paris Saint-Germain PSG | → | Brighton & Hove AlbionBHA | Undisclosed |
| 05 Aug 19 | N. Maupay Neal Maupay |  BrentfordBRE | → | Brighton & Hove AlbionBHA | Undisclosed |
| 05 Aug 19 | N. Maupay Neal Maupay | BrentfordBRE | → | Brighton & Hove AlbionBHA | Undisclosed |
| 03 Aug 19 | A. Webster Adam Webster |  Bristol CityBRC | → | Brighton & Hove AlbionBHA | Undisclosed |
| 03 Aug 19 | A. Webster Adam Webster | Bristol CityBRC | → | Brighton & Hove AlbionBHA | Undisclosed |
| 02 Aug 19 | M. Clarke Matthew Clarke | Brighton & Hove AlbionBHA | → |  Derby CountyDER | Loan |
| 02 Aug 19 | M. Clarke Matthew Clarke | Brighton & Hove AlbionBHA | → | Derby CountyDER | Loan |
| 29 Jul 19 | P. Tau Percy Tau | Brighton & Hove AlbionBHA | → |  Club BruggeBRUG | Loan |
| 29 Jul 19 | L. Freestone Lewis Freestone |  Peterborough UnitedPET | → | Brighton & Hove AlbionBHA | Free |
| 24 Jul 19 | J. Mlakar Jan Mlakar | Brighton & Hove AlbionBHA | → |  Queens Park RangersQPR | Loan |
| 24 Jul 19 | J. Mlakar Jan Mlakar | Brighton & Hove AlbionBHA | → | Queens Park RangersQPR | Loan |
| 24 Jul 19 | R. Sánchez Robert Sánchez | Brighton & Hove AlbionBHA | → |  RochdaleROCH | Loan |
| 23 Jul 19 | C. Walton Christian Walton | Brighton & Hove AlbionBHA | → |  Blackburn RoversBLK | Loan |
| 23 Jul 19 | J. Molumby Jayson Molumby | Brighton & Hove AlbionBHA | → |  MillwallMIL | Loan |
| 23 Jul 19 | C. Walton Christian Walton | Brighton & Hove AlbionBHA | → | Blackburn RoversBLK | Loan |
| 23 Jul 19 | J. Molumby Jayson Molumby | Brighton & Hove AlbionBHA | → | MillwallMIL | Loan |
| 21 Jul 19 | A. Knockaert Anthony Knockaert | Brighton & Hove AlbionBHA | → |  FulhamFUL | Loan |
| 21 Jul 19 | A. Knockaert Anthony Knockaert | Brighton & Hove AlbionBHA | → | FulhamFUL | Loan |
| 01 Jul 19 | B. White Ben White | Brighton & Hove AlbionBHA | → |  Leeds UnitedLEE | Loan |
| 01 Jul 19 | B. White Ben White | Brighton & Hove AlbionBHA | → | Leeds UnitedLEE | Loan |
| 26 Jun 19 | L. Trossard Leandro Trossard |  Racing GenkGENK | → | Brighton & Hove AlbionBHA | Undisclosed |
| 21 Jun 19 | M. Clarke Matthew Clarke |  PortsmouthPOR | → | Brighton & Hove AlbionBHA | Undisclosed |
| 31 Jan 19 | Jan Mlakar | NMXNK MariborNK Maribor | → | Brighton & Hove AlbionBHA | Undisclosed |
| 31 Jan 19 | Tudor-Cristian Baluta | Brighton & Hove AlbionBHA | → |  Viitorul ConstantaFCVC | Loan |
| 31 Jan 19 | Tudor-Cristian Baluta | Viitorul ConstantaFCVC | → | Brighton & Hove AlbionBHA | Undisclosed |
| 28 Jan 19 | E. Schelotto Ezequiel Schelotto | Brighton & Hove AlbionBHA | → |  Chievo VeronaCVO | Loan |
| 28 Jan 19 | E. Schelotto Ezequiel Schelotto | Brighton & Hove AlbionBHA | → | Chievo VeronaCVO | Loan |
| 26 Jan 19 | A. Dreyer Anders Dreyer | Brighton & Hove AlbionBHA | → |  St MirrenSTM | Loan |
| 26 Jan 19 | A. Dreyer Anders Dreyer | Brighton & Hove AlbionBHA | → | St MirrenSTM | Loan |
| 18 Jan 19 | M. Suttner Markus Suttner | Brighton & Hove AlbionBHA | → |  Fortuna DüsseldorfFOR | Loan |
| 18 Jan 19 | M. Suttner Markus Suttner | Brighton & Hove AlbionBHA | → | Fortuna DüsseldorfFOR | Loan |
| 07 Jan 19 | G. Cox George Cox | Brighton & Hove AlbionBHA | → |  Northampton TownNHT | Loan |
| 04 Jan 19 | O. Norwood Oliver Norwood | Brighton & Hove AlbionBHA | → |  Sheffield UnitedSHU | Undisclosed |
| 04 Jan 19 | B. Barclay Ben Barclay | Brighton & Hove AlbionBHA | → |  Notts CountyNOTT | Loan |
| 04 Jan 19 | O. Norwood Oliver Norwood | Brighton & Hove AlbionBHA | → | Sheffield UnitedSHU | Undisclosed |
| 03 Jan 19 | B. White Ben White | Brighton & Hove AlbionBHA | → | Peterborough UnitedPET | Loan |
| 01 Jan 19 | A. Jahanbakhsh Alireza Jahanbakhsh |  AZ AlkmaarAZ | → | Brighton & Hove AlbionBHA | Undisclosed |
| 01 Jan 19 | A. Jahanbakhsh Alireza Jahanbakhsh | AZ AlkmaarAZ | → | Brighton & Hove AlbionBHA | Undisclosed |