Dearest Sister (Lao: ນ້ອງຮັກ) is a 2016 Lao horror film that was released in the US on September 25, 2016 and Laos on May 11, 2017. It is the second feature film directed by Mattie Do. It was selected as the Laotian entry for the Best Foreign Language Film at the 90th Academy Awards, the first time that Laos has submitted a film for consideration in this category, but it was not nominated.

The film is about a Lao village girl who travels to Vientiane to care for her rich cousin who has mysteriously lost her sight, and somehow gained the ability to communicate with the dead. Matters are further driven by the cousin’s ambivalent marriage with an Estonian white migrant, who has his own dark secrets to hide. Do has cited the 19th century ballet La Bayadère as a source of inspiration for the film.