Daftar singel nomor satu Oricon tahun 1970
Tangga lagu Singel Oricon Mingguan

| Terbit | Singel | Artis | Ref>  |
| --- | --- | --- | --- |
| 5 Januari | "Kuroneko no Tango" | Osamu Minagawa [ja] |  |
| 12 Januari | "Kuroneko no Tango" | Osamu Minagawa [ja] |  |
| 19 Januari | "Kuroneko no Tango" | Osamu Minagawa [ja] |  |
| 26 Januari | "Kuroneko no Tango" | Osamu Minagawa [ja] |  |
| 2 Februari | "Kuroneko no Tango" | Osamu Minagawa [ja] |  |
| 9 Februari | "Kuroneko no Tango" | Osamu Minagawa [ja] |  |
| 16 Februari | "Awazu ni Aishite [ja]" | Hiroshi Uchiyamada and Cool Five |  |
| 23 Februari | "Awazu ni Aishite [ja]" | Hiroshi Uchiyamada and Cool Five |  |
| 2 Maret | "Awazu ni Aishite [ja]" | Hiroshi Uchiyamada and Cool Five |  |
| 9 Maret | "Shiroi Chō no Samba [ja]" | Kayoko Moriyama [ja] |  |
| 16 Maret | "Shiroi Chō no Samba [ja]" | Kayoko Moriyama [ja] |  |
| 23 Maret | "Shiroi Chō no Samba [ja]" | Kayoko Moriyama [ja] |  |
| 30 Maret | "Onna no Blues [ja]" | Keiko Fuji |  |
| 6 April | "Onna no Blues [ja]" | Keiko Fuji |  |
| 13 April | "Onna no Blues [ja]" | Keiko Fuji |  |
| 20 April | "Onna no Blues [ja]" | Keiko Fuji |  |
| 27 April | "Onna no Blues [ja]" | Keiko Fuji |  |
| 4 Mei | "Onna no Blues [ja]" | Keiko Fuji |  |
| 11 Mei | "Onna no Blues [ja]" | Keiko Fuji |  |
| 18 Mei | "Onna no Blues [ja]" | Keiko Fuji |  |
| 25 Mei | "Keiko no Yume wa Yoru Hiraku [ja]" | Keiko Fuji |  |
| 1 Juni | "Keiko no Yume wa Yoru Hiraku [ja]" | Keiko Fuji |  |
| 8 Juni | "Keiko no Yume wa Yoru Hiraku [ja]" | Keiko Fuji |  |
| 15 Juni | "Keiko no Yume wa Yoru Hiraku [ja]" | Keiko Fuji |  |
| 22 Juni | "Keiko no Yume wa Yoru Hiraku [ja]" | Keiko Fuji |  |
| 29 Juni | "Keiko no Yume wa Yoru Hiraku [ja]" | Keiko Fuji |  |
| 6 Juli | "Keiko no Yume wa Yoru Hiraku [ja]" | Keiko Fuji |  |
| 13 Juli | "Keiko no Yume wa Yoru Hiraku [ja]" | Keiko Fuji |  |
| 20 Juli | "Keiko no Yume wa Yoru Hiraku [ja]" | Keiko Fuji |  |
| 27 Juli | "Keiko no Yume wa Yoru Hiraku [ja]" | Keiko Fuji |  |
| 3 Agustus | "Ai wa Kizutsuki Yasuku [ja]" | Hide & Rosanna [ja] |  |
| 10 Agustus | "Ai wa Kizutsuki Yasuku [ja]" | Hide & Rosanna [ja] |  |
| 17 Agustus | "Ai wa Kizutsuki Yasuku [ja]" | Hide & Rosanna [ja] |  |
| 24 Agustus | "Ai wa Kizutsuki Yasuku [ja]" | Hide & Rosanna [ja] |  |
| 31 Agustus | "Ai wa Kizutsuki Yasuku [ja]" | Hide & Rosanna [ja] |  |
| 7 September | "Tegami [ja]" | Saori Yuki |  |
| 14 September | "Tegami [ja]" | Saori Yuki |  |
| 21 September | "Tegami [ja]" | Saori Yuki |  |
| 28 September | "Tegami [ja]" | Saori Yuki |  |
| 5 Oktober | "Tegami [ja]" | Saori Yuki |  |
| 12 Oktober | "Tegami [ja]" | Saori Yuki |  |
| 19 Oktober | "The Lovers of the World"   "Otoko no Sekai" (男の世界code: ja is deprecated , lit. "The World of the Man") | Jerry Wallace |  |
| 26 Oktober | "The Lovers of the World"   "Otoko no Sekai" (男の世界code: ja is deprecated , lit. "The World of the Man") | Jerry Wallace |  |
| 2 November | "The Lovers of the World"   "Otoko no Sekai" (男の世界code: ja is deprecated , lit. "The World of the Man") | Jerry Wallace |  |
| 9 November | "Kyōto no Koi [ja]" | Yūko Nagisa [ja] |  |
| 16 November | "Kyōto no Koi [ja]" | Yūko Nagisa [ja] |  |
| 23 November | "Kyōto no Koi [ja]" | Yūko Nagisa [ja] |  |
| 30 November | "Kyōto no Koi [ja]" | Yūko Nagisa [ja] |  |
| 7 Desember | "Kyōto no Koi [ja]" | Yūko Nagisa [ja] |  |
| 14 Desember | "Kyōto no Koi [ja]" | Yūko Nagisa [ja] |  |
| 21 Desember | "Kyōto no Koi [ja]" | Yūko Nagisa [ja] |  |
| 28 Desember | "Kyōto no Koi [ja]" | Yūko Nagisa [ja] |  |