Yoshiko Tominaga (富永美子, Tominaga Yoshiko, born April 3, 1966), better known by her stage name Miina Tominaga (冨永みーな, Tominaga Mīna), is a Japanese actress, voice actress and singer from Nishi-ku, Hiroshima. She is currently attached to Tokyo Actor's Consumer's Cooperative Society.

Tominaga is best known for her roles in Sazae-san (as Katsuo Isono), Persia, the Magic Fairy (as Persia Hayami), Anpanman (as Rollpanna and Dokin), Patlabor (as Noa Izumi), Maison Ikkoku (as Kozue Nanao), Rurouni Kenshin (as Myōjin Yahiko), Jigoku Sensei Nūbē (as Miki Hosokawa), DNA² (as Karin Aoi) and Bikkuriman 2000 (as Takeru).