| 16 Oct 20 | R. Bennett Ryan Bennett |  Wolverhampton WanderersWOL | → |  Swansea CitySWA | Undisclosed |
| 16 Oct 20 | J. Latibeaudiere Joel Latibeaudiere |  Manchester CityMNC | → | Swansea CitySWA | Free |
| 16 Oct 20 | R. Bennett Ryan Bennett | Wolverhampton WanderersWOL | → | Swansea CitySWA | Undisclosed |
| 16 Oct 20 | J. Rodon Joe Rodon | Swansea CitySWA | → |  Tottenham HotspurTOT | Undisclosed |
| 16 Oct 20 | J. Latibeaudiere Joel Latibeaudiere | Manchester CityMNC | → | Swansea CitySWA | Free |
| 16 Oct 20 | K. Palmer Kasey Palmer |  Bristol CityBRC | → | Swansea CitySWA | Loan |
| 16 Oct 20 | J. Rodon Joe Rodon | Swansea CitySWA | → | Tottenham HotspurTOT | Undisclosed |
| 02 Oct 20 | V. Gyökeres Viktor Gyökeres |  Brighton & Hove AlbionBHA | → | Swansea CitySWA | Loan |
| 02 Oct 20 | V. Gyökeres Viktor Gyökeres | Brighton & Hove AlbionBHA | → | Swansea CitySWA | Loan |
| 09 Sept 20 | B. Celina Bersant Celina | Swansea CitySWA | → |  Dijon FCODIJO | Undisclosed |
| 09 Sept 20 | B. Celina Bersant Celina | Swansea CitySWA | → | Dijon FCODIJO | Undisclosed |
| 26 Aug 20 | M. Guehi Marc Guehi |  ChelseaCHE | → | Swansea CitySWA | Loan |
| 26 Aug 20 | M. Guehi Marc Guehi | ChelseaCHE | → | Swansea CitySWA | Loan |
| 25 Aug 20 | M. Gibbs-White Morgan Gibbs-White | Wolverhampton WanderersWOL | → | Swansea CitySWA | Loan |
| 25 Aug 20 | M. Gibbs-White Morgan Gibbs-White | Wolverhampton WanderersWOL | → | Swansea CitySWA | Loan |
| 16 Aug 20 | F. Woodman Freddie Woodman |  Newcastle UnitedNEW | → | Swansea CitySWA | Loan |
| 16 Aug 20 | F. Woodman Freddie Woodman | Newcastle UnitedNEW | → | Swansea CitySWA | Loan |
| 31 Jan 20 | B. Bastón Borja Bastón | Swansea CitySWA | → |  Aston VillaAVL | Loan |
| 31 Jan 20 | B. Bastón Borja Bastón | Swansea CitySWA | → | Aston VillaAVL | Loan |
| 15 Jan 20 | C. Gallagher Conor Gallagher | ChelseaCHE | → | Swansea CitySWA | Loan |
| 15 Jan 20 | C. Gallagher Conor Gallagher | ChelseaCHE | → | Swansea CitySWA | Loan |
| 10 Jan 20 | M. Guehi Marc Guehi | ChelseaCHE | → | Swansea CitySWA | Loan |
| 10 Jan 20 | M. Guehi Marc Guehi | ChelseaCHE | → | Swansea CitySWA | Loan |
| 07 Jan 20 | R. Brewster Rhian Brewster |  LiverpoolLIV | → | Swansea CitySWA | Loan |
| 07 Jan 20 | R. Brewster Rhian Brewster | LiverpoolLIV | → | Swansea CitySWA | Loan |