| 16 Oct 20 | F. Benkovic Filip Benkovic |  Leicester CityLEI | → |  Cardiff CityCAR | Loan |
| 16 Oct 20 | H. Wilson Harry Wilson |  LiverpoolLIV | → | Cardiff CityCAR | Loan |
| 16 Oct 20 | F. Benkovic Filip Benkovic | Leicester CityLEI | → | Cardiff CityCAR | Loan |
| 16 Oct 20 | H. Wilson Harry Wilson | LiverpoolLIV | → | Cardiff CityCAR | Loan |
| 07 Sept 20 | S. Ojo Sheyi Ojo | LiverpoolLIV | → | Cardiff CityCAR | Loan |
| 07 Sept 20 | S. Ojo Sheyi Ojo | LiverpoolLIV | → | Cardiff CityCAR | Loan |
| 25 Aug 20 | J. Osei-Tutu Jordi Osei-Tutu |  ArsenalARS | → | Cardiff CityCAR | Loan |
| 25 Aug 20 | J. Osei-Tutu Jordi Osei-Tutu | ArsenalARS | → | Cardiff CityCAR | Loan |
| 31 Jan 20 | D. Sanderson Dion Sanderson |  Wolverhampton WanderersWOL | → | Cardiff CityCAR | Loan |
| 31 Jan 20 | D. Sanderson Dion Sanderson | Wolverhampton WanderersWOL | → | Cardiff CityCAR | Loan |
| 30 Jan 20 | B. Smith Brad Smith |  AFC BournemouthBOU | → | Cardiff CityCAR | Loan |
| 30 Jan 20 | B. Smith Brad Smith | AFC BournemouthBOU | → | Cardiff CityCAR | Loan |