Seo Shin-ae (Korean: 서신애; born October 20, 1998) is a South Korean actress. She made her entertainment debut in 2004 in a commercial for Seoul Milk. Seo then became known as a child actress, notably in the film Meet Mr. Daddy (2007), and the television dramas Thank You (2007), Grudge: The Revolt of Gumiho (2010), and The Queen's Classroom (2013).