| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
4051  | Tatsuware-san Tatsuware-san,Tatsuware-yama | Japan, Ibaraki Hitachi Shi | mountain | N 36° 42′ 39'' | E 140° 33′ 40'' |
| 4052 | Tateishi-yama Tateishi-yama,Tateisi Yama | Japan, Iwate Ōfunato-shi | mountain | N 39° 2′ 7'' | E 141° 49′ 19'' |
| 4053 | Takasuzu-yama Takasuzu-san,Takasuzu-yama | Japan, Ibaraki Hitachi-ōta Shi | mountain | N 36° 37′ 14'' | E 140° 35′ 15'' |
| 4054 | Takasaki Mori Takasaki Mori,Takasaki-mori,Takazaki-mori,gao qi sen,高崎森 | Japan, Akita Semboku-shi | mountain | N 39° 53′ 0'' | E 140° 36′ 0'' |
| 4055 | Takanosu Yama Takanoshi-yama,Takanosu Yama,Takanosu-yama,yingno chao shan,鷹の巣山 | Japan, Miyagi Shibata-gun > Kawasaki Machi | mountain | N 38° 15′ 51'' | E 140° 35′ 38'' |
| 4056 | Takakura Yama Higashime-yama,Takakura Yama,Takakura-yama,gao cang shan,高倉山 | Japan, Iwate Iwate-gun > Shizukuishi Chō | mountain | N 39° 36′ 29'' | E 141° 1′ 33'' |
| 4057 | Takakura Yama Takakura Yama,Takakura-yama,gao cang shan,高倉山 | Japan, Yamagata Mogami-gun > Tozawa Mura | mountain | N 38° 37′ 9'' | E 140° 7′ 10'' |
| 4058 | Takagi Yama Takagi Yama,Takagi-yama,Takajo-yama,Takajō-yama,gao cheng shan,高城山 | Japan, Miyagi Tome Shi | mountain | N 38° 47′ 46'' | E 141° 22′ 44'' |
| 4059 | Tabashine-yama Hakamagoshi-yama,Tabashine-yama | Japan, Iwate Nishiiwai Gun > Hiraizumi-cho | mountain | N 39° 0′ 43'' | E 141° 11′ 3'' |
| 4060 | Sune-zaki Sune-misaki,Sune-saki,Sune-zaki | Japan, Iwate Ōfunato-shi | point | N 39° 3′ 49'' | E 141° 52′ 27'' |
| 4061 | Shōga Dake Shoga Dake,Shoga-dake,Shoga-take,Shōga Dake,Shōga-take,shengke yue,笙ヶ岳 | Japan, Yamagata Akumi-gun > Yuza Machi | mountain | N 39° 5′ 18'' | E 140° 0′ 0'' |
| 4062 | Shirataka Yama Shirataka Yama,Shirataka-yama,bai ying shan,白鷹山 | Japan, Yamagata Higashimurayama-gun > Yamanobe Machi | mountain elevation 986m | N 38° 13′ 30'' | E 140° 10′ 25'' |
| 4063 | Shira-saki Shira-saki,Shiro-saki,Shiro-zaki | Japan, Iwate | point | N 39° 27′ 0'' | E 142° 3′ 0'' |
| 4064 | Shioya Zaki Shioya Zaki,Shioya-misaki,Shioya-saki,Sioya Saki | Japan, Fukushima Iwaki-shi | cape | N 36° 59′ 43'' | E 140° 58′ 55'' |
| 4065 | Shikotsu-zaki Shikotsu-saki,Shikotsu-zaki,Sikotu Saki | Japan, Iwate Ōfunato-shi | point | N 39° 10′ 52'' | E 141° 55′ 18'' |
| 4066 | Shiba Yama Shiba Yama,Shiba-yama,zhi shan,芝山 | Japan, Fukushima Ishikawa-gun > Hirata Mura | mountain | N 37° 9′ 29'' | E 140° 36′ 45'' |
| 4067 | Shibakura Yama Shibakura Yama,Shibakura-yama,chai cang shan,柴倉山 | Japan, Yamagata Higashine Shi | mountain elevation 1276m | N 38° 27′ 5'' | E 140° 33′ 38'' |
| 4068 | Shakujō-yama Shakujo-yama,Shakujō-yama,Shakuzo-san,Shakuzo-zan,Shakuzō-san | Japan, Ibaraki Hitachi-ōmiya Shi | mountain | N 36° 42′ 45'' | E 140° 17′ 32'' |
| 4069 | Sengan Tōge Sengan Toge,Sengan Tōge,Sengan-toge,Sengan-tōge,xian yan gu,仙岩峠 | Japan, Akita Semboku-shi | pass | N 39° 42′ 22'' | E 140° 48′ 37'' |
| 4070 | Seki San Seki San,Seki-san,Seki-yama,guan shan,関山 | Japan, Fukushima Shirakawa Shi | mountain | N 37° 4′ 54'' | E 140° 14′ 56'' |
| 4071 | Seaburi-yama Seaburi-yama,Seyaki-yama | Japan, Fukushima Futaba-gun > Naraha Machi | mountain | N 37° 17′ 0'' | E 140° 55′ 0'' |
| 4072 | Sashigara-dake Sashigara-dake,Sashigara-take,Sashigara-yama,Togegara Take | Japan, Iwate Miyako Shi | mountain | N 39° 48′ 0'' | E 141° 56′ 0'' |
| 4073 | Sasamori Yama Sasamori Yama,Sasamori-yama,ti sen shan,笹森山 | Japan, Akita Yuri-honjō Shi | mountain | N 39° 24′ 18'' | E 140° 9′ 56'' |
| 4074 | Sangan Jima Sangan Island,Sangan Shima,Sangan Sima,Sangan-jima | Japan, Iwate | island | N 39° 18′ 22'' | E 141° 58′ 57'' |
| 4075 | Sabusawa-jima Sabusawa Sima,Sabusawa-jima,Sabusawa-shima | Japan, | island | N 38° 19′ 58'' | E 141° 7′ 27'' |
| 4076 | Ryūjin-saki Ryujin-saki,Ryujin-zaki,Ryuzin Saki,Ryūjin-saki,Ryūjin-zaki,Ryūzin Saki | Japan, Iwate Miyako Shi | point | N 39° 38′ 36'' | E 141° 58′ 34'' |
| 4077 | Ryō Zen Ryo Zen,Ryo-zen,Ryō Zen,Ryō-zen,ling shan,霊山 | Japan, Fukushima Sōma Shi | mountain | N 37° 46′ 7'' | E 140° 41′ 15'' |
| 4078 | Ryōri-misaki Ryori saki,Ryori-misaki,Ryori-zaki,Ryōri-misaki,Ryōri-zaki | Japan, Iwate Ōfunato-shi | cape | N 39° 1′ 45'' | E 141° 51′ 8'' |
| 4079 | Ryōri-fuji Ryori Huzi,Ryori-fuji,Ryôri Huzi,Ryōri-fuji | Japan, Iwate Ōfunato-shi | mountain | N 39° 4′ 0'' | E 141° 48′ 0'' |
| 4080 | Rokkoushi-san Rokkoshi-san,Rokkoshi-yama,Rokkoushi-san,Rokkōshi-san,Rokkōshi-yama | Japan, Iwate Tōno Shi | mountain | N 39° 19′ 0'' | E 141° 39′ 0'' |
| 4081 | Ōtsu-hana Otsu Bana,Otsu-hana,Otu Hana,Ōtsu-hana | Japan, Ibaraki | cape | N 36° 49′ 0'' | E 140° 49′ 0'' |
| 4082 | Ōtakine Yama Otakine Yama,Otakine-yama,da long gen shan,Ōtakine Yama,Ōtakine-yama,大滝根山 | Japan, Fukushima Tamura-shi | mountain | N 37° 21′ 16'' | E 140° 42′ 6'' |
| 4083 | Ōsu Zaki Osu Saki,Osu Zaki,Osu-zaki,da xu qi,Ōsu Saki,Ōsu Zaki,Ōsu-zaki,大須崎 | Japan, Miyagi Ishinomaki Shi | point | N 38° 31′ 26'' | E 141° 32′ 44'' |
| 4084 | Osuke Yama Osuke Yama,Osuke-yama,nan zhu shan,男助山 | Japan, Iwate Iwate-gun > Shizukuishi Chō | mountain | N 39° 36′ 56'' | E 140° 55′ 59'' |
| 4085 | Oshō-yama Osho-yama,Osho-zan,Oshō-yama | Japan, Ibaraki Kitaibaraki Shi | mountain | N 36° 54′ 39'' | E 140° 35′ 24'' |
| 4086 | Ōshio-misaki Oiso-saki,Oshio-misaki,Oshio-saki,Osio Saki,Ōiso-saki,Ōshio-misaki,Ōshio-saki,Ōsio Saki | Japan, Iwate Ōfunato-shi | cape | N 39° 5′ 5'' | E 141° 52′ 49'' |
| 4087 | Ō-shima O Sima,O-shima,Ō-shima | Japan, Iwate | island | N 39° 27′ 44'' | E 141° 58′ 29'' |
| 4088 | Ō-shima O Sima,O-shima,Ô Sima,Ō-shima | Japan, Iwate | island | N 39° 24′ 8'' | E 141° 59′ 52'' |
| 4089 | Ondoko-yama Netoko Yama,Ondoko-yama,Ontoko-yama,Otodoko-yama | Japan, Iwate Shimohei-gun > Iwaizumi-machi | mountain | N 39° 51′ 0'' | E 141° 46′ 0'' |
| 4090 | Omoshiro Yama Omoshiro Yama,Omoshiro-yama,mian bai shan,面白山 | Japan, Miyagi Sendai Shi > Taihaku Ku | mountain elevation 1264m | N 38° 20′ 59'' | E 140° 31′ 20'' |
| 4091 | Ōmori Yama Omori Yama,Omori-yama,da sen shan,Ōmori Yama,Ōmori-yama,大森山 | Japan, Iwate Ichinoseki-shi | mountain | N 38° 51′ 45'' | E 141° 27′ 9'' |
| 4092 | Ōmori Yama Omori Yama,Omori-yama,da sen shan,Ōmori Yama,Ōmori-yama,大森山 | Japan, Yamagata Mogami-gun > Tozawa Mura | mountain elevation 781m | N 38° 48′ 54'' | E 140° 4′ 50'' |
| 4093 | Ombi-yama Ombi-yama,Onbi Yama | Japan, Iwate Kesen-gun > Sumita Chō | mountain | N 39° 13′ 0'' | E 141° 30′ 0'' |
| 4094 | Oku Yama Oku Yama,Oku-yama,ao shan,奥山 | Japan, Akita Semboku-shi | mountain | N 39° 39′ 50'' | E 140° 29′ 19'' |
| 4095 | Oki-sannō-jima Oki-Sanno Sima,Oki-Sannô Sima,Oki-sanno-jima,Oki-sannō-jima,Okisanno Shima | Japan, Miyagi | island | N 38° 21′ 30'' | E 141° 31′ 46'' |
| 4096 | Ōjōji-hara Ojogi Gahara,Ojoji-hara,Ojojiga-hara,Ōjōji-hara,Ōjōjiga-hara | Japan, | plain(s) | N 38° 30′ 0'' | E 140° 51′ 0'' |
| 4097 | Ohako-zaki Ohaka saki,Ohako-saki,Ohako-zaki | Japan, Iwate Kamaishi Shi | point | N 39° 21′ 0'' | E 141° 59′ 43'' |
| 4098 | Ōguro-mori Daikoku-mori,Oguro-mori,Ōguro-mori | Japan, Iwate Tōno Shi | mountain | N 39° 28′ 0'' | E 141° 35′ 0'' |
| 4099 | Odaidō-yama Midaido San,Midaido-yama,Midaidō-yama,Odaido-yama,Odaidō-yama | Japan, Iwate Morioka Shi | mountain | N 39° 45′ 0'' | E 141° 24′ 0'' |
| 4100 | Ōarai-misaki Oarai-misaki,Oarai-saki,Oarai-zaki,Ōarai-misaki,Ōarai-saki | Japan, Ibaraki Higashiibaraki-gun > Oarai Town | point | N 36° 18′ 35'' | E 140° 35′ 19'' |
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