Janel Meilani Parrish Long is an American actress and singer. She starred as Mona Vanderwaal in the mystery-drama television series Pretty Little Liars (2010–2017) and its spinoff Pretty Little Liars: The Perfectionists (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 Misérables (1996), and Jade in the teen comedy film Bratz (2007). She finished in third place on the tenth season of Fox's The Masked Singer in 2023.

Mona Vanderwaal is a fictional character in the Pretty Little Liars book series, its television adaptation, and the spin-off TV series Pretty Little Liars: The Perfectionists. In the TV shows, she is portrayed by Janel Parrish.