Hiroko Kasahara should not be confused with Hiroko Kosahara.
| Hiroko Kasahara | |
| Native Name: | 笠原 弘子 |
| Native Name Lang: | ja |
| Birth Date: | 19 February 1970 |
| Birth Place: | Niigata Prefecture, Japan |
| Nationality: | Japanese |
| Occupation: | Voice actress, singer, stage actress |
| Years Active: | 1983—present |
| Agent: | Ogipro The Next |
| Height Cm: | 155 |
is a Japanese voice actress, J-pop singer and stage actress. She sang the ending theme song of the PlayStation 2 role-playing video game Shadow Hearts, titled Ending Theme ~ Shadow Hearts, and the ending theme of the PC and PlayStation 2 visual novel , titled Aqua Stripe.