Soi Noppha Mat is the name of 3 sois in Bangkok: - A soi in the Bangkok Noi district of Bangkok - A soi off Phet Kasem road in the Phasi Charoen district of Bangkok, which is also known as Soi Phet Kasem 25 - A soi off Witthayu road in the Pathum Wan district of Bangkok, which is also known as Soi Sanam Khli.