Arnaldo Castillo is a 29-year-old professional football player from PAR. He currently plays for O.Higgins, wearing the number 9 shirt. He plays primarily as a Forward. He stands at 186cm tall and weighs 78kg. His preferred foot is Right. His current market value is estimated at 250K €.

His most recent move was a Free from to O.Higgins on 2024-01-01.

In the CHI Liga de Primera 2026 season, Arnaldo Castillo scored 2 goals and provided 0 assists across 5 appearances, averaging 0.4 goals per game with 5 shots attempted and 3 on target.