Kim So-hyun (Korean: 김소현; Hanja: 金所泫; born June 4, 1999) is a South Korean actress who began her career as a child actress in 2006 and initially gained public attention for playing a villainous young queen-to-be in Moon Embracing the Sun (2012) and a girl who falls into tragedy in Missing You (2013).

She took on her first leading role in teen drama Who Are You: School 2015 (2015) and since then, has starred in musical Page Turner (2016), historical melodrama The Emperor: Owner of the Mask (2017), romantic comedy Radio Romance (2018) and television dramas based on Naver Webtoon's Hey Ghost, Let's Fight (2016), Love Alarm (2019) and The Tale of Nokdu (2019). She was the regular host of MBC's music program Music Core and survival reality show Under Nineteen in 2019.

Kim was dubbed the "Nation's Little Sister", "Queen of Child Actor" and has been recognized as the representative of a prolific child-actress who has solidified her acting skills of various works since childhood, and have established herself as the next-generation Hallyu star. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.