Chermarn Boonyasak (Thai: เฌอมาลย์ บุญยศักดิ์, born September 15, 1982 in Bangkok, Thailand) is a Thai film and television actress and model. Her 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, Sinitta Boonyasak. Chermarn has also been credited as Laila Boonyasak, and her nickname is "Ploy".

• สี่แพร่ง (2008)

  
• รักแห่งสยาม (2007)

  
• เรื่องรัก น้อยนิด มหาศาล (2003)

  
• คิดถึงวิทยา (2014)

  
• Chow lok yuen (2003)