Laila Boonyasak, better known by her birth name Chermarn Boonyasak, nickname Ploy, is a Thai film and television actress and model. She is well known for her role as June/Tang in the film The Love of Siam, which earned her a Suphannahong National Film Award for Best Supporting Actress and a Bangkok Critics Assembly Award for the same category. Her other film roles have included the title ghost character in director Yuthlert Sippapak's horror-comedies Buppah Rahtree and Buppah Rahtree Phase 2: Rahtree Returns. She was also featured in Pen-Ek Ratanaruang's Last Life in the Universe, in which she portrayed the younger sister of the character played by her real-life older sister, Daran Boonyasak.
