# List of Oricon number-one singles of 1970

The highest-selling singles in Japan are ranked in the Oricon Singles Chart, which is published by Oricon Style magazine. The data are compiled by Oricon based on each singles' physical sales. This list includes the singles that reached the number one place on that chart in 1970.

## Oricon Weekly Singles Chart

| Issue date | Song | Artist(s) |
| January 5 | "Kuroneko no Tango" | Osamu Minagawa [ja] |
| January 12 | "Kuroneko no Tango" | Osamu Minagawa [ja] |
| January 19 | "Kuroneko no Tango" | Osamu Minagawa [ja] |
| January 26 | "Kuroneko no Tango" | Osamu Minagawa [ja] |
| February 2 | "Kuroneko no Tango" | Osamu Minagawa [ja] |
| February 9 | "Kuroneko no Tango" | Osamu Minagawa [ja] |
| February 16 | "Awazu ni Aishite [ja]" | Hiroshi Uchiyamada and Cool Five |
| February 23 | "Awazu ni Aishite [ja]" | Hiroshi Uchiyamada and Cool Five |
| March 2 | "Awazu ni Aishite [ja]" | Hiroshi Uchiyamada and Cool Five |
| March 9 | "Shiroi Chō no Samba [ja]" | Kayoko Moriyama [ja] |
| March 16 | "Shiroi Chō no Samba [ja]" | Kayoko Moriyama [ja] |
| March 23 | "Shiroi Chō no Samba [ja]" | Kayoko Moriyama [ja] |
| March 30 | "Onna no Blues [ja]" | Keiko Fuji |
| April 6 | "Onna no Blues [ja]" | Keiko Fuji |
| April 13 | "Onna no Blues [ja]" | Keiko Fuji |
| April 20 | "Onna no Blues [ja]" | Keiko Fuji |
| April 27 | "Onna no Blues [ja]" | Keiko Fuji |
| May 4 | "Onna no Blues [ja]" | Keiko Fuji |
| May 11 | "Onna no Blues [ja]" | Keiko Fuji |
| May 18 | "Onna no Blues [ja]" | Keiko Fuji |
| May 25 | "Keiko no Yume wa Yoru Hiraku" | Keiko Fuji |
| June 1 | "Keiko no Yume wa Yoru Hiraku" | Keiko Fuji |
| June 8 | "Keiko no Yume wa Yoru Hiraku" | Keiko Fuji |
| June 15 | "Keiko no Yume wa Yoru Hiraku" | Keiko Fuji |
| June 22 | "Keiko no Yume wa Yoru Hiraku" | Keiko Fuji |
| June 29 | "Keiko no Yume wa Yoru Hiraku" | Keiko Fuji |
| July 6 | "Keiko no Yume wa Yoru Hiraku" | Keiko Fuji |
| July 13 | "Keiko no Yume wa Yoru Hiraku" | Keiko Fuji |
| July 20 | "Keiko no Yume wa Yoru Hiraku" | Keiko Fuji |
| July 27 | "Keiko no Yume wa Yoru Hiraku" | Keiko Fuji |
| August 3 | "Ai wa Kizutsuki Yasuku [ja]" | Hide & Rosanna [ja] |
| August 10 | "Ai wa Kizutsuki Yasuku [ja]" | Hide & Rosanna [ja] |
| August 17 | "Ai wa Kizutsuki Yasuku [ja]" | Hide & Rosanna [ja] |
| August 24 | "Ai wa Kizutsuki Yasuku [ja]" | Hide & Rosanna [ja] |
| August 31 | "Ai wa Kizutsuki Yasuku [ja]" | Hide & Rosanna [ja] |
| September 7 | "Tegami [ja]" | Saori Yuki |
| September 14 | "Tegami [ja]" | Saori Yuki |
| September 21 | "Tegami [ja]" | Saori Yuki |
| September 28 | "Tegami [ja]" | Saori Yuki |
| October 5 | "Tegami [ja]" | Saori Yuki |
| October 12 | "Tegami [ja]" | Saori Yuki |
| October 19 | "The Lovers of the World" Japanese title: "Otoko no Sekai" (男の世界, lit. "The World of the Man") | Jerry Wallace |
| October 26 | "The Lovers of the World" Japanese title: "Otoko no Sekai" (男の世界, lit. "The World of the Man") | Jerry Wallace |
| November 2 | "The Lovers of the World" Japanese title: "Otoko no Sekai" (男の世界, lit. "The World of the Man") | Jerry Wallace |
| November 9 | "Kyōto no Koi [ja]" | Yūko Nagisa [ja] |
| November 16 | "Kyōto no Koi [ja]" | Yūko Nagisa [ja] |
| November 23 | "Kyōto no Koi [ja]" | Yūko Nagisa [ja] |
| November 30 | "Kyōto no Koi [ja]" | Yūko Nagisa [ja] |
| December 7 | "Kyōto no Koi [ja]" | Yūko Nagisa [ja] |
| December 14 | "Kyōto no Koi [ja]" | Yūko Nagisa [ja] |
| December 21 | "Kyōto no Koi [ja]" | Yūko Nagisa [ja] |
| December 28 | "Kyōto no Koi [ja]" | Yūko Nagisa [ja] |