Liliana Ōno is a Japanese child voice actor born on May 12, 2016, who is affiliated with the Courage Agency. Despite her young age, she has already performed lead roles in two notable Japanese animated feature films.

Ōno made her film debut providing the voice of the title character in the 2023 anime feature Totto-Chan: The Little Girl at the Window. The film, directed by Shinnosuke Yakuwa, is an adaptation of Tetsuko Kuroyanagi's bestselling autobiographical novel. Her performance as the energetic and imaginative seven-year-old Totto-chan was praised for being perfectly suited to the role, capturing the character's rambunctious nature and active imagination. The cast for this film included acclaimed actors such as Koji Yakusho as the school principal, Shun Oguri as Totto-chan's father, and Anne Watanabe as her mother.

In 2025, Ōno took on the role of Pero in the animated adventure film Dream Animals: The Movie, which is also known as Tabekko Dobutsu: THE MOVIE. The film is based on the popular Tabekko Dobutsu snacks from the company Ginbis and was produced by Marza Animation Planet. Directed by Hitoshi Takekiyo, the story follows a group of singing and dancing animal idols in Sweets Land. Ōno's character, Pero, is a young girl who assists the Dream Animals as they attempt to rescue their friend Pegasus from the villainous King Gotton. At a preview screening event for the film in April 2025, Ōno spoke about her favorite character, Pegasus, and praised the singing ability of her co-star Akari Takaishi. Her other co-stars in this film include Genta Matsuda, Tomokazu Seki, and Akio Otsuka.

Through these two major film projects, Ōno has worked with directors Shinnosuke Yakuwa and Hitoshi Takekiyo, and has been part of ensemble casts featuring some of Japan's most established acting talents.