Mariya Nishiuchi (西内まりや; born December 24, 1993, in Fukuoka Prefecture) is a Japanese model, actress, and singer. After being scouted in Fukuoka in 2006, she entered the entertainment industry through fashion and screen work. She became an exclusive model for ニコラ in 2007, then for Seventeen in 2010. Her acting career began with the 2008 television drama 正義の味方, and she later took leading roles in スイッチガール!!, 山田くんと7人の魔女, ホテルコンシェルジュ, レインツリーの国, CUTIE HONEY -TEARS-, and 突然ですが、明日結婚します. Her work has spanned magazines, television, film, and pop music.
As a recording artist on Sonic Groove, Nishiuchi made her debut in 2014 with "LOVE EVOLUTION". Her music developed alongside her modeling and acting career. In 2015 she released "ありがとうForever...", the first song for which she wrote both the lyrics and music, and she also performed "Don't let me down", the ending theme for "Fairy Tail". She left Rising Production in 2018, returned to acting in 2021 with Netflix's 全裸監督 season 2, and starred as 李香蘭 in the 2023 stage production 李香蘭 -花と華-.
