Cynthia Jansen is an actress, best known for the film Unsuk Chin: Alice in Wonderland.

Opera credits include Patsy in Monticello, the Witch in Hansel and Gretel, Marthe Schwerlein in Faust, Suzy/Gabriele in La Rondine, Mercedes in Carmen, Mistress Quickly in Falstaff, Rita the Rat/Agnes the Digger in Fantastic Mr. Fox, Kate Pinkerton in Madama Butterfly, and Flora/Annina in La Traviata (Los Angeles Opera), Page in Rigoletto and the Elderly Woman in Food of Love (Glimmerglass Opera), and Maddelana in Rigoletto (San Francisco Opera).