Jan Oliveras Codina (born 7 July 2004) is a Spanish footballer who plays as a left-back for club Celta Fortuna.
Born in Manresa, Barcelona, Catalonia, Oliveras joined the youth academy of Spanish side Espanyol. In 2016, he joined the youth academy of Spanish La Liga side Barcelona and, in 2020, he joined the youth academy of Italian Serie A side Roma. He was described as "established himself as a starter during the 2022âÂÂ23 season while playing for them.
In 2024, he almost signed for Saudi Pro League side Al-Ittihad, after the move failed, he was sent on loan to Croatian SuperSport HNL side Dinamo Zagreb for the 2024âÂÂ25 season.
On 13 August 2025, Oliveras moved back to his native Spain, and joined La Liga club Celta on a free transfer, initially assigned to the reserve team Celta Fortuna.
Oliveras is a Spain youth international. He has played for the Spain national under-18 football team and the Spain national under-19 football team. He made five appearances and scored zero goals while playing for the Spain national under-18 football team. He made three appearances and scored zero goals while playing for the Spain national under-19 football team.
Oliveras mainly operates as a defender. He is left-footed. He specifically operates as a left-back. He can also operate as a left midfielder, as a central midfielder, and as a left-winger.