Kaya Kiyohara (清原 果耶, Kiyohara Kaya; born January 30, 2002) is a Japanese actress, model and singer. She won the Best Supporting Actress award at the 45th Japan Academy Film Prize for the film In The Wake.

Born in Osaka, Kiyohara joined Amuse Inc. in 2014. She has since starred in a number of dramas and films over the years. She made a cameo appearance in the film My Tomorrow, Your Yesterday. Kiyohara had supporting roles in the live-action films, March Comes In like a Lion and March Goes Out like a Lamb. She gained further recognition when she starred in the final part of the Chihayafuru live-action trilogy, Chihayafuru Part 3. She had a cameo for We Made A Beautiful Bouquet, which is the 8th highest grossing Japanese film of 2021. Kiyohara starred in NHK's 104th asadora, Welcome Home, Monet, and won the Best Supporting Actress award at the 45th Japan Academy Film Prize for the film In The Wake. She also starred in the 2024 film 18×2 Beyond Youthful Days which was one of her best performances.