Ayaka Osajima is a professional footballer from JPN and is currently 29 years old. He is on the books of AC Nagano Parceiro Ladies and wears shirt number 27. His main role on the pitch is Defender. He measures 164cm in height and weighs 55kg.

Across the Women Empowerment League 2025-2026, Ayaka Osajima appeared in 16 matches and averaged 0 tackles, 0 interceptions, 0 clearances, and 0 blocked shots per game.