| 18 Sept 23 | G. Biancone Giulian Biancone |  Nottingham ForestNFO | → |  OlympiacosOLY | Undisclosed |
| 15 Sept 23 | E. Dennis Emmanuel Dennis | Nottingham ForestNFO | → |  Istanbul BasaksehirIBFK | Loan |
| 14 Sept 23 | J. Shelvey Jonjo Shelvey | Nottingham ForestNFO | → |  Caykur RizesporCAY | Loan |
| 05 Sept 23 | A. Mighten Alex Mighten | Nottingham ForestNFO | → |  KV KortrijkKVK | Loan |
| 01 Sept 23 | O. Vlachodimos Odisseas Vlachodimos |  BenficaBEN | → | Nottingham ForestNFO | Undisclosed |
| 01 Sept 23 | B. Johnson Brennan Johnson | Nottingham ForestNFO | → |  Tottenham HotspurTOT | Undisclosed |
| 01 Sept 23 | C. Hudson-Odoi Callum Hudson-Odoi |  ChelseaCHE | → | Nottingham ForestNFO | Undisclosed |
| 01 Sept 23 | H. Ui-Jo Hwang Ui-Jo | Nottingham ForestNFO | → |  Norwich CityNOR | Loan |
| 01 Sept 23 | J. Panzo Jonathan Panzo | Nottingham ForestNFO | → |  Cardiff CityCAR | Loan |
| 01 Sept 23 | R. Freuler Remo Freuler | Nottingham ForestNFO | → |  BolognaBOL | Undisclosed |
| 01 Sept 23 | N. Domínguez Nicolás Domínguez | BolognaBOL | → | Nottingham ForestNFO | Undisclosed |
| 01 Sept 23 | A. Omobamidele Andrew Omobamidele | Norwich CityNOR | → | Nottingham ForestNFO | Undisclosed |
| 01 Sept 23 | L. Mbe Soh Loïc Mbe Soh | Nottingham ForestNFO | → |  Almere CityALM | Loan |
| 01 Sept 23 | D. Origi Divock Origi |  AC MilanMIL | → | Nottingham ForestNFO | Loan |
| 01 Sept 23 | I. Sangaré Ibrahim Sangaré |  PSV EindhovenPSV | → | Nottingham ForestNFO | Undisclosed |
| 01 Sept 23 | N. Tavares Nuno Tavares |  ArsenalARS | → | Nottingham ForestNFO | Loan |
| 31 Aug 23 | L. O'Brien Lewis O'Brien | Nottingham ForestNFO | → |  MiddlesbroughMID | Loan |
| 31 Aug 23 | Murillo |  CorinthiansCOR | → | Nottingham ForestNFO | Undisclosed |
| 25 Aug 23 | O. Richards Omar Richards | Nottingham ForestNFO | → | OlympiacosOLY | Loan |
| 25 Aug 23 | A. Santos Andrey Santos | ChelseaCHE | → | Nottingham ForestNFO | Loan |
| 25 Aug 23 | M. Drager Mohamed Drager | Nottingham ForestNFO | → |  FC BaselFCB | Undisclosed |
| 25 Aug 23 | T. Fornah Tyrese Fornah | Nottingham ForestNFO | → |  Derby CountyDER | Undisclosed |
| 23 Aug 23 | G. Montiel Gonzalo Montiel |  SevillaSEV | → | Nottingham ForestNFO | Loan |
| 18 Aug 23 | G. Scarpa Gustavo Scarpa | Nottingham ForestNFO | → | OlympiacosOLY | Loan |
| 09 Aug 23 | M. Turner Matt Turner | ArsenalARS | → | Nottingham ForestNFO | Undisclosed |
| 09 Aug 23 | S. Cook Steve Cook | Nottingham ForestNFO | → |  Queens Park RangersQPR | Undisclosed |
| 02 Aug 23 | R. Laryea Richie Laryea | Nottingham ForestNFO | → |  Vancouver WhitecapsVAN | Loan |
| 02 Aug 23 | B. Ojeda Braian Ojeda | Nottingham ForestNFO | → |  Real Salt LakeRSL | Undisclosed |
| 01 Aug 23 | J. Bowler Josh Bowler | Nottingham ForestNFO | → | Cardiff CityCAR | Loan |
| 01 Aug 23 | O. Hammond Oliver Hammond | Nottingham ForestNFO | → |  Cheltenham TownCHL | Loan |
| 25 Jul 23 | S. Surridge Sam Surridge | Nottingham ForestNFO | → |  Nashville SCNSH | Undisclosed |
| 25 Jul 23 | A. Elanga Anthony Elanga |  Manchester UnitedMAN | → | Nottingham ForestNFO | Undisclosed |
| 22 Jul 23 | O. Aina Ola Aina |  TorinoTOR | → | Nottingham ForestNFO | Free |
| 01 Jul 23 | C. Wood Chris Wood |  Newcastle UnitedNEW | → | Nottingham ForestNFO | Undisclosed |
| 20 Mar 23 | L. O'Brien Lewis O'Brien | Nottingham ForestNFO | → |  D.C. UnitedDC | Loan |
| 05 Feb 23 | H. Ui-Jo Hwang Ui-Jo | Nottingham ForestNFO | → | FSXFC SeoulFC Seoul | Loan |
| 02 Feb 23 | A. Ayew André Ayew | XXX | → | Nottingham ForestNFO | Free |
| 31 Jan 23 | Felipe |  Atletico MadridATM | → | Nottingham ForestNFO | Undisclosed |
| 31 Jan 23 | J. Shelvey Jonjo Shelvey | Newcastle UnitedNEW | → | Nottingham ForestNFO | Undisclosed |
| 31 Jan 23 | K. Navas Keylor Navas |  Paris Saint-GermainPSG | → | Nottingham ForestNFO | Loan |
| 31 Jan 23 | J. Smith Jordan Smith | Nottingham ForestNFO | → |  Huddersfield TownHUD | Loan |
| 30 Jan 23 | A. Konate Ateef Konate | Nottingham ForestNFO | → |  Oxford UnitedOXF | Loan |
| 23 Jan 23 | A. Donnelly Aaron Donnelly | Nottingham ForestNFO | → |  Port ValePTV | Loan |
| 23 Jan 23 | L. Mbe Soh Loïc Mbe Soh | Nottingham ForestNFO | → |  GuingampEAG | Loan |
| 20 Jan 23 | C. Wood Chris Wood | Newcastle UnitedNEW | → | Nottingham ForestNFO | Loan |
| 20 Jan 23 | D. Taylor Dale Taylor | Nottingham ForestNFO | → |  Burton AlbionBRT | Loan |
| 16 Jan 23 | Danilo |  PalmeirasPAL | → | Nottingham ForestNFO | Undisclosed |
| 05 Jan 23 | J. Bowler Josh Bowler | Nottingham ForestNFO | → |  BlackpoolBLP | Loan |
| 01 Jan 23 | G. Scarpa Gustavo Scarpa | PalmeirasPAL | → | Nottingham ForestNFO | Free |