is a Japanese professional footballer who plays as a midfielder for Damallsvenskan club FC RosengÃÂ¥rd, on loan from Women's Super League club Manchester City, and the Japan national under-20s team.
On 16 October 2021, Oyama made her WE League debut for Tokyo Verdy Beleza. She later became the youngest ever scorer in the division's history at age 17.
In March 2022, she was ranked as one of the Top 20 international youth talents by Goal.com.
On 18 January 2025, she signed a two and a half year contract with Women's Super League club Manchester City. She made 2 league appearances before moving to FC RosengÃÂ¥rd on a six-month loan in August 2025.
Oyama has represented Japan at under-16 and under-20 youth level.
Oyama gained a degree in Sports Science from Waseda University in Tokyo.
Japan U16
Japan U20