| 31 Aug 18 | Taylor Moore |  Bristol CityBRC | → |  Southend UnitedSOUT | Loan |
| 31 Aug 18 | C. Pring Cameron Pring | Bristol CityBRC | → |  Newport CountyNEW | Loan |
| 23 Aug 18 | T. Kalas Tomás Kalas |  ChelseaCHE | → | Bristol CityBRC | Loan |
| 23 Aug 18 | T. Kalas Tomás Kalas | ChelseaCHE | → | Bristol CityBRC | Loan |
| 10 Aug 18 | S. Mccoulsky Shawn Mccoulsky | Bristol CityBRC | → | Southend UnitedSOUT | Loan |
| 09 Aug 18 | M. Djuric Milan Djuric | Bristol CityBRC | → |  SalernitanaSAL | Undisclosed |
| 09 Aug 18 | J. Da Silva Jay Da Silva | ChelseaCHE | → | Bristol CityBRC | Loan |
| 09 Aug 18 | J. Bryan Joe Bryan | Bristol CityBRC | → |  FulhamFUL | Undisclosed |
| 09 Aug 18 | J. Da Silva Jay Da Silva | ChelseaCHE | → | Bristol CityBRC | Loan |
| 09 Aug 18 | J. Bryan Joe Bryan | Bristol CityBRC | → | FulhamFUL | Undisclosed |
| 03 Aug 18 | G. O'Neil Gary O'Neil | Bristol CityBRC | → |  Bolton WanderersBOL | Free |
| 03 Aug 18 | A. Baldwin Aden Baldwin | Bristol CityBRC | → |  Cheltenham TownCHL | Loan |
| 01 Aug 18 | N. Mäenpää Niki Mäenpää | XXX | → | Bristol CityBRC | Free |
| 30 Jul 18 | T. Bakinson Tyreeq Bakinson | Bristol CityBRC | → | Newport CountyNEW | Loan |
| 23 Jul 18 | M. Eisa Mohamed Eisa | Cheltenham TownCHL | → | Bristol CityBRC | Undisclosed |
| 10 Jul 18 | J. Smith Jon Smith | Bristol CityBRC | → |  Tranmere RoversTRN | Loan |
| 06 Jul 18 | J. Hunt Jack Hunt |  Sheffield WednesdaySHW | → | Bristol CityBRC | Undisclosed |
| 03 Jul 18 | A. Weimann Andreas Weimann |  Derby CountyDER | → | Bristol CityBRC | Undisclosed |
| 02 Jul 18 | H. Adelakun Hakeeb Adelakun |  Scunthorpe UnitedSCU | → | Bristol CityBRC | Undisclosed |
| 02 Jul 18 | Z. Vyner Zak Vyner | Bristol CityBRC | → |  Rotherham UnitedROT | Loan |
| 29 Jun 18 | G. Engvall Gustav Engvall | Bristol CityBRC | → | KMXKV MechelenKV Mechelen | Undisclosed |
| 28 Jun 18 | B. De Cordova-Reid Bobby De Cordova-Reid | Bristol CityBRC | → |  Cardiff CityCAR | Undisclosed |
| 28 Jun 18 | B. De Cordova-Reid Bobby De Cordova-Reid | Bristol CityBRC | → | Cardiff CityCAR | Undisclosed |
| 28 Jun 18 | A. Webster Adam Webster |  Ipswich TownIPS | → | Bristol CityBRC | Undisclosed |
| 27 Jun 18 | A. Flint Aden Flint | Bristol CityBRC | → |  MiddlesbroughMID | Undisclosed |
| 18 Jun 18 | M. Watkins Marley Watkins |  Norwich CityNOR | → | Bristol CityBRC | Undisclosed |
| 29 Mar 18 | G. Engvall Gustav Engvall | Bristol CityBRC | → |  IFKIFK | Loan |
| 31 Jan 18 | T. Plavotic Tin Plavotic | Bristol CityBRC | → |  BarnetBAR | Loan |
| 31 Jan 18 | J. Andrews Jake Andrews | Bristol CityBRC | → | Cheltenham TownCHL | Loan |
| 25 Jan 18 | L. Diony Loïs Diony |  Saint-EtienneASSE | → | Bristol CityBRC | Loan |
| 25 Jan 18 | L. Diony Loïs Diony | Saint-EtienneASSE | → | Bristol CityBRC | Loan |
| 18 Jan 18 | Z. Vyner Zak Vyner | Bristol CityBRC | → |  Plymouth ArgylePLY | Loan |
| 12 Jan 18 | R. Kent Ryan Kent |  LiverpoolLIV | → | Bristol CityBRC | Loan |
| 12 Jan 18 | R. Kent Ryan Kent | LiverpoolLIV | → | Bristol CityBRC | Loan |
| 05 Jan 18 | L. Walsh Liam Walsh |  EvertonEVE | → | Bristol CityBRC | Undisclosed |
| 05 Jan 18 | L. Walsh Liam Walsh | EvertonEVE | → | Bristol CityBRC | Undisclosed |