Liliana Barba is a Mexican voice actress who dubs Abby Cadabby in Sesame Street and Plaza Sésamo.

She also plays Abby's voice in 3, 2, 1, ¡Vamos!, the direct-to-DVD features Being Green, Elmo And Abby's Birthday Fun!, and Abby in Wonderland, and in the educational resource video Math Is Everywhere.

Some of her dubbing credits include Wheezie on Dragon Tales, Daisy Duck in multiple productions, Chuckie Finster (second voice) in Rugrats and All Grown Up!, Tea Gardner in Yu-Gi-Oh!, and Hilary Duff's titular character in Lizzie McGuire.