John Olof Mellberg (born 30 July 2006) is a Swedish professional footballer who plays as defender for Austrian Bundesliga club Red Bull Salzburg.
Career Mellberg started playing football with the youth academy of IF Brommapojkarna at the age of 9, and was promoted to their senior team for the 2023 season. On 19 June 2023, he transferred to the Austrian Bundesliga club Red Bull Salzburg on a contract until 2026, and was initially assigned to their partner club FC Liefering. He made his senior and professional debut with Liefering in a 1–0 loss to Dornbirn on 28 July 2023.
International career Mellberg is a youth international for Sweden, having played for the Sweden U17s.
In June 2025 he was selected for the senior Sweden squad for friendly matches against Hungary and Algeria on 6 and 10 June 2025, respectively.
Personal life His father Olof Mellberg was also a professional footballer.
