One Day (Thai: แฟนเดย์ แฟนกันแค่วันเดียว, RTGS: Fanday...Fan Kun Khae Wan Diaw) is a 2016 Thai romance drama film directed by Banjong Pisanthanakun, and starring Chantavit Dhanasevi and Nittha Jirayungyurn. In October 2016, Banjong was in Singapore to promote his new romantic drama together with the two leads, Chantavit and TV actress Nittha who is making her debut on the big screen. An Indian Hindi-language remake titled Ek Din was released on 1 May 2026.
