Erina Hayashi (林 恵里奈, Hayashi Erina, born 21 July 1994) is a Japanese tennis player.

She has career-high WTA rankings of world No.

She has won one singles title and eleven doubles titles on the ITF Women's Circuit.

Hayashi made her main-draw debut on the WTA Tour at the 2017 Japan Women's Open, where she received a wildcard alongside Momoko Kobori for the doubles competition.

This biographical article relating to Japanese tennis is a stub.