List of Oricon number-one singles of 1973
# List of Oricon number-one singles of 1973

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 1973.

## Oricon Weekly Singles Chart

| Issue date | Song | Artist(s) |
| - | - | - |
| January 1 | "Onna no Michi" | Shiro Miya & Pinkara Trio |
| February 19 | "Gakuseigai no Kissaten [ja]" | Garo |
| April 9 | "Wakaba no Sasayaki [ja]" | Mari Amachi |
| May 14 | "Akai Fūsen [ja]" | Miyoko Asada |
| June 18 | "Kiken na Futari [ja]" | Kenji Sawada |
| June 25 | "Kimi no Tanjōbi [ja]" | Garo |
| July 2 | "Kiken na Futari" | Kenji Sawada |
| July 16 | "Koisuru Natsu no Hi [ja]" | Mari Amachi |
| August 27 | "Watashi no Kare wa Hidarikiki [ja]" | Megumi Asaoka |
| September 10 | "Kokoro no Tabi [ja]" | Tulip [ja] |
| September 24 | "Chigireta Ai [ja]" | Hideki Saijo |
| October 22 | "Kandagawa" | Kousetsu Minami & Kaguyahime [ja] |
| December 3 | "Kojin Jugyō" | Finger 5 |
| December 10 | "Kandagawa" | Kousetsu Minami & Kaguyahime |
| December 17 | "Chiisana Koi no Monogatari [ja]" | Agnes Chan |
| December 24 | "Ai no Jūjika [ja]" | Hideki Saijo |
| December 31 | no ranking | no ranking |
