Sander Marthinussen is a professional footballer from NOR and is currently 27 years old. He is on the books of Mjondalen IF and wears shirt number 8. His main role on the pitch is Defender. He measures 187cm in height and weighs 78kg.

His latest transfer saw him join Mjondalen IF from Lysekloster via on 2026-02-03.

Across the Norwegian 2.Divisjon 2025, Sander Marthinussen appeared in 24 matches and averaged 0 tackles, 0 interceptions, 0 clearances, and 0 blocked shots per game.