Siren Diao Balde (born 21 January 2005) is a Spanish footballer who plays as a striker for Spanish club Mirandés on loan from Italian club Atalanta.
Born in Figueres, Girona, Catalonia, Diao moved to neighbouring Castelló d'Empúries at the age of eight months and was raised in the city. He is of Senegalese descent.
Diao started playing football at the age of five. He represented Esplais CF, FE Figueres, Girona FC, FC L'Escala and UE Costa Brava before moving to Italy with Hellas Verona FC in 2022.
On 4 January 2024, Atalanta BC announced the signing of Diao, and assigned him to the under-23 team in the Serie C. He made his senior debut nine days later, coming on as a late substitute for Giuseppe Di Serio in a 1âÂÂ0 home win over Trento, and scored his first goal on 4 February by netting the opener in a 1âÂÂ1 away draw against FC Pro Vercelli 1892.
Diao was also included in the matchday squad for several senior team games in early 2024, but remained on the bench in all of them.
On 15 August 2024, Diao returned to his home country after agreeing to a one-year loan deal with Granada CF in Segunda División.
On 6 August 2025, Diao was loaned by Cesena in Serie B.
On 2 February 2026, Diao moved on a new loan to Mirandés in Segunda División.
On 3 November 2023, Diao was called up to the Spain national under-19 team, and made his debut for the side twelve days later in a 5âÂÂ0 win over Moldova.