Nok Sinjai Plengpanich is a Thai actress and model. She has acted in numerous lakorns as well as films and theatrical productions. In 2007, she starred in the critically acclaimed The Love of Siam, and also acted in a revival of the stage production, Banlang Mek: The Musical. She is married to fellow actor Chatchai Plengpanich. She has 2 sons and a daughter (Gun, Bom, Dom).