Ryoma Ooka (, born 2 October 2001) is a field hockey player from Japan, who plays as a forward.
Career
Senior national team
Ooka made his senior international debut in 2021.
Since his debut, Ooka has medalled at two Asian Champions Trophies. At the 2021 edition in Dhaka he won silver, followed by bronze at the 2023 edition in Chennai.
In 2023, Ooka was named to the national team for the FIH World Cup in Bhubaneswar and Rourkela, as well as the Asian Games in Hangzhou. At the Asian Games, he won a silver medal.