Diego Besio is a professional footballer from SUI and is currently 20 years old. He is on the books of St. Gallen and wears shirt number 69. His main role on the pitch is Forward. His estimated market valuation currently stands at 800K €.

His latest transfer saw him join St. Gallen from FC St.Gallen U21 via on 2025-12-31.

During the Switzerland Super League 2025-2026 campaign, Diego Besio made 12 appearances, scoring 2 goals and adding 0 assists. He averaged 0.2 goals per match from 9 shots, with 5 on target.