List of Oricon number-one singles of 1975
# List of Oricon number-one singles of 1975

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 single's physical sales. This list includes the singles that reached the number one place on that chart in 1975.

## Oricon Weekly Singles Chart

| Issue date | Song | Artist(s) |
| - | - | - |
| January 6 | "Fuyu no Iro [ja]" | Momoe Yamaguchi |
| January 13 | "Fuyu no Iro [ja]" | Momoe Yamaguchi |
| January 20 | "Fuyu no Iro [ja]" | Momoe Yamaguchi |
| January 27 | "Fuyu no Iro [ja]" | Momoe Yamaguchi |
| February 3 | "Hajimete no Dekigoto" | Junko Sakurada |
| February 10 | "Shitetsu Ensen [ja]" | Goro Noguchi |
| February 17 | "Shitetsu Ensen [ja]" | Goro Noguchi |
| February 24 | "Shitetsu Ensen [ja]" | Goro Noguchi |
| March 3 | "22-sai no Wakare [ja]" | Kaze |
| March 10 | "22-sai no Wakare [ja]" | Kaze |
| March 17 | "22-sai no Wakare [ja]" | Kaze |
| March 24 | "22-sai no Wakare [ja]" | Kaze |
| March 31 | "Waga Yoki Tomoyo [ja]" | Hiroshi Kamayatsu |
| April 7 | "Waga Yoki Tomoyo [ja]" | Hiroshi Kamayatsu |
| April 14 | "Waga Yoki Tomoyo [ja]" | Hiroshi Kamayatsu |
| April 21 | "Waga Yoki Tomoyo [ja]" | Hiroshi Kamayatsu |
| April 28 | "Showa Kare Susuki [ja]" | Sakura & Ichiro [ja] |
| May 5 | "Showa Kare Susuki [ja]" | Sakura & Ichiro [ja] |
| May 12 | "Showa Kare Susuki [ja]" | Sakura & Ichiro [ja] |
| May 19 | "Cyclamen no Kaori [ja]" | Akira Fuse |
| May 26 | "Cyclamen no Kaori [ja]" | Akira Fuse |
| June 2 | "Cyclamen no Kaori [ja]" | Akira Fuse |
| June 9 | "Cyclamen no Kaori [ja]" | Akira Fuse |
| June 16 | "Cyclamen no Kaori [ja]" | Akira Fuse |
| June 23 | "Kakkoman Boogie / Minato no Yoko Yokohama Yokosuka [ja]" | Down Town Boogie Woogie Band [ja] |
| June 30 | "Kakkoman Boogie / Minato no Yoko Yokohama Yokosuka [ja]" | Down Town Boogie Woogie Band [ja] |
| July 7 | "Kakkoman Boogie / Minato no Yoko Yokohama Yokosuka [ja]" | Down Town Boogie Woogie Band [ja] |
| July 14 | "Kakkoman Boogie / Minato no Yoko Yokohama Yokosuka [ja]" | Down Town Boogie Woogie Band [ja] |
| July 21 | "Kakkoman Boogie / Minato no Yoko Yokohama Yokosuka [ja]" | Down Town Boogie Woogie Band [ja] |
| July 28 | "Kokoro Nokori [ja]" | Takashi Hosokawa |
| August 4 | "Kokoro Nokori [ja]" | Takashi Hosokawa |
| August 11 | "Kokoro Nokori [ja]" | Takashi Hosokawa |
| August 18 | "Kokoro Nokori [ja]" | Takashi Hosokawa |
| August 25 | "Omoide Makura" [ja] | Kyoko Kosaka [ja] |
| September 1 | "Romance [ja]" | Hiromi Iwasaki |
| September 8 | "Romance [ja]" | Hiromi Iwasaki |
| September 15 | "Romance [ja]" | Hiromi Iwasaki |
| September 22 | "Toki no Sugiyuku Mama ni [ja]" | Kenji Sawada |
| September 29 | "Toki no Sugiyuku Mama ni [ja]" | Kenji Sawada |
| October 6 | "Toki no Sugiyuku Mama ni [ja]" | Kenji Sawada |
| October 13 | "Toki no Sugiyuku Mama ni [ja]" | Kenji Sawada |
| October 20 | "Toki no Sugiyuku Mama ni [ja]" | Kenji Sawada |
| October 27 | "Ichigo Hakusho wo Mou Ichido [ja]" | Bang Bang [ja] |
| November 3 | "Ichigo Hakusho wo Mou Ichido [ja]" | Bang Bang [ja] |
| November 10 | "Ichigo Hakusho wo Mou Ichido [ja]" | Bang Bang [ja] |
| November 17 | "Ichigo Hakusho wo Mou Ichido [ja]" | Bang Bang [ja] |
| November 24 | "Ichigo Hakusho wo Mou Ichido [ja]" | Bang Bang [ja] |
| December 1 | "Ichigo Hakusho wo Mou Ichido [ja]" | Bang Bang [ja] |
| December 8 | "Sentimental [ja]" | Hiromi Iwasaki |
| December 15 | "Sentimental [ja]" | Hiromi Iwasaki |
| December 22 | "Ano Hi ni Kaeritai [ja]" | Yumi Arai |
| December 29 | "Ano Hi ni Kaeritai [ja]" | Yumi Arai |
