Shiina Natsukawa (夏川 椎菜, Natsukawa Shiina, born July 18, 1996) is a Japanese voice actress, singer and YouTuber from Chiba Prefecture.

She is a member of the singing unit TrySail, along with Sora Amamiya and Momo Asakura.

[1] She is affiliated with Music Ray'n.

[2] Her notable roles include Akeno Misaki in High School Fleet, Yuki Kusakabe in Interviews with Monster Girls, Hikayu Hoshikawa in Re:Creators, and Tsuruno Yui in Magia Record.

Under her activities as a YouTuber she goes by the name 417P.