Real Oviedo (Laliga): every transfer in and out, fees paid and earned, squad market value, €7.7m spent and €2.8m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-07-01 | Eric Bailly | Real Oviedo | Without Club | — |
| 2026-06-30 | Santiago Colombatto | Real Oviedo | León | Free |
| 2026-02-02 | Josip Brekalo | Real Oviedo | Hertha BSC | Free |
| 2026-01-26 | Brandon Dominguès | Real Oviedo | Górnik Zabrze | Loan |
| 2026-01-22 | Thiago Fernández | Villarreal | Real Oviedo | Loan |
| 2026-01-05 | Daniel Paraschiv | Real Oviedo | FC Rapid 1923 | Loan |
| 2026-01-02 | Thiago Borbas | RB Bragantino | Real Oviedo | Loan |
| 2026-01-01 | Nicolás Fonseca | León | Real Oviedo | Loan |
| 2025-08-31 | Javi López | Real Sociedad | Real Oviedo | Loan |
| 2025-08-29 | David Carmo | Nott'm Forest | Real Oviedo | Loan |
| 2025-08-21 | Josip Brekalo | Fiorentina | Real Oviedo | Free |
| 2025-08-19 | Leander Dendoncker | Aston Villa | Real Oviedo | Free |
| 2025-08-18 | Eric Bailly | Villarreal | Real Oviedo | Free |
| 2025-08-13 | Ovie Ejaria | Without Club | Real Oviedo | — |
| 2025-08-01 | Daniel Paraschiv | Real Oviedo | CyD Leonesa | Loan |
| 2025-07-24 | Álex Forés | Villarreal | Real Oviedo | Loan |
| 2025-07-18 | Luka Ilic | Red Star | Real Oviedo | €2m |
| 2025-07-18 | Horațiu Moldovan | Atlético | Real Oviedo | Loan |
| 2025-07-12 | César de la Hoz | Real Oviedo | Without Club | — |
| 2025-07-11 | Ilyas Chaira | Girona | Real Oviedo | €1.5m |