Seina Nakajima (????, Nakajima Seina, born 2 December, 1997 in Karuizawa) is a Japanese curler.
She is the skip of the Chubu Electric Power curling team, which won the 2019 Japanese women's championship, winning all of their games including three matches against Japan's bronze medal winning 2018 Olympic Team, skipped by Satsuki Fujisawa.