Arisa Kotani (小谷 有理沙, Kotani Arisa, born November 5, 2000) is a Japanese female curler.

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

Her older sister Yuna Kotani is also a curler.

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

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