Cindy Lou Who is a sweet young girl from Dr. Seuss' storybook How the Grinch Stole Christmas! and the 2000 film who appearing as the tritagonist.

She was a two-year-old Who girl who lives in Whoville and plays a minor role in the story in the storybook.

In 1966, she was voiced by the late June Foray. In 2000, she was portrayed by Taylor Momsen in the live action movie of the same name who have more role than her cartoon version.

In 2018, she'll be appearing in the movie remake (18 years since the Jim Carrey film), however it will be computer animated than live action and and she'll be voiced by Cameron Seely who was in the movie The Greatest Showman.