Juliana Sloan is an award-winning, classically trained American actor and vocalist who has built a diverse career across film, television, voice acting, and theatre. She holds a Masters Degree in Acting from the Guildford School of Acting in the United Kingdom. Her early work includes originating roles at Playwrights Horizons in New York City and being a finalist on NBCs Grease: Youre the One That I Want, working with Andrew Lloyd-Webber and Kathleen Marshall. On stage, she played the title role in the first Broadway national tour of Thoroughly Modern Millie and has performed with companies including South Coast Repertory and Sacramento Music Circus.

Sloan is also a renowned vocalist who has recorded with Walt Disney Records. She is the new voice of Mary Poppins on Mary Poppins: The Legacy Collection and Cinderella on Cinderella: The Lost Chords. She frequently works alongside Disney Legend and two-time Oscar winner Richard M. Sherman and is prominently featured in the Emmy-nominated PBS special Songs of A Lifetime, directed by Don Hahn. Her voice can also be heard on the Grammy-nominated album West Side Story with the San Francisco Symphony.

In animation, Sloan has taken on several notable voice roles. She is best known for portraying Miss Wendy in the Disney/Pixar feature Toy Story 4. Her other credits include a recurring guest star role on Disney XDs Star vs. The Forces of Evil, as well as appearances on Cartoon Networks Unikitty and PBSs Curious George. In the anime series Magilumiere Magical Girls Inc., which premiered in October 2024, Sloan voices the character Lily Aoi in the English dub. The English dub for the series was directed by Mimi Maynard and Paulette Victor-Lifton at Blue Digital Group Studios.

Sloan has received recognition for her work, including the Spotlight Award for Best Vocalist in 2001 and the Best Actress award at the 168 Film Festival for her role in the film Here. She was also nominated for Best Supporting Actress for the film 12,000 Pounds at the 169 Film Festival. She is a producer and creator of the comedic web series Finding Fillion, which was directed by Joel Zwick. Sloan is based in Los Angeles.