Ichimura Oma, born May 3, 1977 in Kanagawa Prefecture, Japan, is a freelance voice actress (seiyuu) who worked for Office CHK. Her birthname is Omata Tomoko (小俣智子), her blood type A.

Aokawa Nagare, Sumishiro Kiyoka, Sanjuusan Nana and Miru is aliases Ichimura Oma has used in adult games/anime.