Adama Boiro

Boiro started his senior career with CA Osasuna's reserves, where he made his debut on 11 September 2021 in a 1–0 away win against CD Laredo in the Segunda Federación. He came to be regarded as one of their most important players, and a prospect for the senior team. On 24 January 2024, Boiro signed a five-and-a-half-year contract with Athletic Bilbao after the club paid his €2 million minimum fee release clause; he was initially assigned to the B side, also in the fourth division. He played his first match in a 0–0 draw at UD Barbastro a few days after arriving. Boiro's maiden appearance in La Liga occurred on 28 August 2024, when he featured for 79 minutes of the 1–0 home victory over Valencia CF. Three months later, in his first UEFA Europa League game, he opened an eventual 3–0 defeat of IF Elfsborg in the league phase also at the San Mamés Stadium after an assist from Gorka Guruzeta in the sixth minute; he returned the favour to his teammate for the last goal. On 1 September 2026, Boiro joined West Ham United on a season-long loan with an option to buy.

Boiro mainly operates as a left-back. He is known for his strength.

As of match played 23 May 2026

Born in Dakar, Senegal, to parents originally from Guinea, Boiro moved with his family to Spain at the age of four.