T
- (Kashiwazaki Shi) Takayanagichō-kadoide
- (Niigata Shi) Tsukefunechō
- (Nagaoka Shi) Tsukanoyama
- (Tainai Shi) Tsuiji
- (Higashikambara-gun) Tsugawa
- (Tainai Shi) Tsuboana
- (Sado Shi) Tsubaki
- (Niigata Shi) Toyano
- (Minamiuonuma Shi) Toya
- (Itoigawa Shi) Tonami
- (Nakaōnuma-gun) Tomaru
- (Itoigawa Shi) Tokami
- (Nagaoka Shi) Tochibori
- (Nagaoka Shi) Teradomari-kōshimizu
- (Higashikambara-gun) Tenma
- (Kashiwazaki Shi) Takayanagichō-ishiguro
- (Kashiwazaki Shi) Takayanagichō-okanomachi
- (Myoko-shi) Taguchi
- (Jōetsu Shi) Takada
- (Tainai Shi) Takahashi
- (Murakami Shi) Takane
- (Sado Shi) Takasaki
- (Jōetsu Shi) Takehira
- (Jōetsu Shi) Tamugi
- (Niigata Shi) Tarōdai
- (Sado Shi) Tatsuma
- (Tōkamachi-shi) Tasawa
- (Shibata Shi) Tennō
- (Minamikanbara-gun) Tagami
- (Nagaoka Shi) Tochio-honchō