The highest-selling singles in Japan are ranked in the

Oricon Singles Chart The Oricon Singles Chart is the Japanese music industry-standard singles popularity chart issued daily, weekly, monthly and yearly by Oricon. Chart rankings are based on physical singles' sales. Until 2017, Oricon did not track download sales. In J ...

, which is published by ''Oricon Style'' magazine. The data are compiled by

Oricon , established in 1999, is the holding company at the head of a Japanese corporate group that supplies statistics and information on music and the music industry in Japan and Western music. It started as, which was founded by Sōkō Koike in Nov ...

based on each singles' physical sales. This list includes the singles that reached the number one place on that chart in 1985.

Oricon Weekly Singles Chart

References

{{Number-one singles in Japan 1985 in Japanese music Japan Oricon Oricon 1985