Jules de Jongh (also known as Jules Dejongh) is an American actress, voice actress, singer and television and radio presenter. She is known as the voice of Faith, the protagonist of the video game Mirror's Edge, and for voicing Emily, Rosie, Lady Hatt, Alicia Botti and various other characters in the US version of the long-running British children's television series Thomas & Friends (also voiced Alicia Botti in the UK, formerly Mavis in the US, and provided Emily's singing voice in the UK version of The Great Race), and Yugo and Evangelyne in the English dub of the French animated series Wakfu.

She provided some additional character voices in the 2011 Disney video game, Kinect Disneyland Adventures.