| Yumi Maruyama | |
| Height: | 1.75 m |
| Birth Date: | 30 November 1957 |
| Birth Place: | Setagaya, Tokyo, Japan |
| Nationality: | Japanese |
| Nationalyears: | 1977–1988 |
| Teamnumber: | 1 |
| Position: | Middle blocker |
Yumi Maruyama (née Egami, Japanese: 丸山 由美, née 江上; born 30 November 1957) is a Japanese former volleyball player who competed in the 1984 Summer Olympics and in the 1988 Summer Olympics. She was born in Setagaya, and grew up in Higashimurayama, Tokyo. After she attended Shoin Junior and Senior High School, she joined Hitachi Ltd., where she became a captain of the team in 1979.
In 1984, she was a member of the Japanese team that won the bronze medal in the Olympic tournament.
Four years later, she finished fourth with the Japanese team in the 1988 Olympic tournament.