# List of Oricon number-one singles of 1979

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 1979.

## Oricon Weekly Singles Chart

| Issue date | Song | Artist(s) |
| January 1 | "Chameleon Army" | Pink Lady |
| January 8 | "Chameleon Army" | Pink Lady |
| January 15 | "Chameleon Army" | Pink Lady |
| January 22 | "Chameleon Army" | Pink Lady |
| January 29 | "Champion [ja]" | Alice |
| February 5 | "Champion [ja]" | Alice |
| February 12 | "Champion [ja]" | Alice |
| February 19 | "Champion [ja]" | Alice |
| February 26 | "Hero (Hero ni Naru Toki, Sore wa Ima) [ja]" | Kai Band [ja] |
| March 5 | "Hero (Hero ni Naru Toki, Sore wa Ima) [ja]" | Kai Band [ja] |
| March 12 | "Young Man (Y.M.C.A.) [ja]" | Hideki Saijo |
| March 19 | "Young Man (Y.M.C.A.) [ja]" | Hideki Saijo |
| March 26 | "Young Man (Y.M.C.A.) [ja]" | Hideki Saijo |
| April 2 | "Young Man (Y.M.C.A.) [ja]" | Hideki Saijo |
| April 9 | "Young Man (Y.M.C.A.) [ja]" | Hideki Saijo |
| April 16 | "Miserarete [ja]" | Judy Ongg |
| April 23 | "Miserarete [ja]" | Judy Ongg |
| April 30 | "Miserarete [ja]" | Judy Ongg |
| May 7 | "Miserarete [ja]" | Judy Ongg |
| May 14 | "Miserarete [ja]" | Judy Ongg |
| May 21 | "Miserarete [ja]" | Judy Ongg |
| May 28 | "Miserarete [ja]" | Judy Ongg |
| June 4 | "Miserarete [ja]" | Judy Ongg |
| June 11 | "Miserarete [ja]" | Judy Ongg |
| June 18 | "Kimi no Asa [ja]" | Satoshi Kishida [ja] |
| June 25 | "Kimi no Asa [ja]" | Satoshi Kishida [ja] |
| July 2 | "Kimi no Asa [ja]" | Satoshi Kishida [ja] |
| July 9 | "Kimi no Asa [ja]" | Satoshi Kishida [ja] |
| July 16 | "Kimi no Asa [ja]" | Satoshi Kishida [ja] |
| July 23 | "Omoide-zake [ja]" | Sachiko Kobayashi |
| July 30 | "Kanpaku Sengen [ja]" | Masashi Sada |
| August 6 | "Kanpaku Sengen [ja]" | Masashi Sada |
| August 13 | "Kanpaku Sengen [ja]" | Masashi Sada |
| August 20 | "Kanpaku Sengen [ja]" | Masashi Sada |
| August 27 | "Kanpaku Sengen [ja]" | Masashi Sada |
| September 3 | "Kanpaku Sengen [ja]" | Masashi Sada |
| September 10 | "Kanpaku Sengen [ja]" | Masashi Sada |
| September 17 | "Kanpaku Sengen [ja]" | Masashi Sada |
| September 24 | "Kanpaku Sengen [ja]" | Masashi Sada |
| October 1 | "Kanpaku Sengen [ja]" | Masashi Sada |
| October 8 | "Sexual Violet No. 1 [ja]" | Masahiro Kuwana [ja] |
| October 15 | "Sexual Violet No. 1 [ja]" | Masahiro Kuwana [ja] |
| October 22 | "Sexual Violet No. 1 [ja]" | Masahiro Kuwana [ja] |
| October 29 | "Oyaji no Ichiban Nagai Hi [ja]" | Masashi Sada |
| November 5 | "Oyaji no Ichiban Nagai Hi [ja]" | Masashi Sada |
| November 12 | "Oyaji no Ichiban Nagai Hi [ja]" | Masashi Sada |
| November 19 | "Oyaji no Ichiban Nagai Hi [ja]" | Masashi Sada |
| November 26 | "Oyaji no Ichiban Nagai Hi [ja]" | Masashi Sada |
| December 3 | "Oyaji no Ichiban Nagai Hi [ja]" | Masashi Sada |
| December 10 | "Ihōjin" | Sayuri Kume |
| December 17 | "Ihōjin" | Sayuri Kume |
| December 24 | "Ihōjin" | Sayuri Kume |
| December 31 | "Ihōjin" | Sayuri Kume |