รถไฟฟ้า มาหานะเธอ : Rot Fai Fa Ma Ha Na Thoe is a Thai romantic comedy film released by GTH on 15 October 2009. It was directed by Adisorn Tresirikasem and written by Navapol Thamrongruttanarit. The film tells the story of Mei Li (Cris Horwang), a thirty-year-old woman feeling desperate about being last among her friends to marry, and her relationship with Loong (Theeradej Wongpuapan), an engineer working on the BTS Skytrain system. The skytrain, which celebrated its tenth anniversary the same year and lends its name to the film’s Thai and English titles, is prominently featured throughout the story.
The film was criticised for its loose plot, but critics felt that young middle-class female Bangkokians could identify with the contemporary setting. The film was financially successful, earning 57 million baht on its opening weekend and over 140 million baht after four weeks