Yuna Kotani (小谷 優奈, Kotani Yuna, born May 26, 1998 in Sagamihara) is a Japanese female curler.

[1] At the national level she is a 2018 Japan women's champion.

Her younger sister Arisa is also a curler.

They played together at the 2018 World Women's Curling Championship.

This biographical article relating to curling in Japan is a stub.