Mami Koyama
| Mami Koyama | |
| Profile | |
| Gender: | Female |
|---|---|
| Date of birth: | January 17, 1955 |
| Place of birth: | Nishio, Aichi |
| Voice of: | Vermouth |
Mami Koyama 小山 (茉美 Koyama Mami), born January 17, 1955, credited as "小山 まみ" until 1980 is a seiyu who was born in Nishio, Aichi.
In Detective Conan, she voices Vermouth