Janel Meilani Parrish Long (born October 30, 1988) is an American actress and singer, who is best known for starring as Mona Vanderwaal in the mystery-drama franchise Pretty Little Liars (2010-2017, 2019) and as Margot Covey in the To All the Boys film series (2018-2021).

She also portrayed Young Cosette in the Broadway production of Les Miserables (1996), and Jade in the teen comedy film Bratz (2007).