Niiza (Japanese: 新座市; -shi) is a city located in Saitama, Japan, and is essentially a suburb of the Tokyo conurbation.
Niiza is located at the southernmost part of Saitama, and is crossed by three train lines: the Seibu-Ikebukuro Line, the JR Musashino Line and the Tōbu Tōjō Main Line.
About 1% of the population are foreign residents, and Niiza is known for a unique curriculum approach to English in both primary education and middle schools, where students are required to take English conversation class in addition to the nationally required English language class.