List of Oricon number-one singles of 1980

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 1980.

Oricon Weekly Singles Chart

Issue date	Song	Artist(s)	Ref.
January 7	"Ihōjin" (ja)	Sayuri Kume (ja)	[1]
January 14
January 21
January 28	"Daitokai" (ja)	Crystal King
February 4
February 11
February 18
February 25
March 3
March 10	"Okuru Kotoba" (ja)	Kaientai (ja)
March 17
March 24
March 31
April 7
April 14
April 21	"Runaway" (ja)	Chanels
April 28
May 5
May 12
May 19
May 26
June 2
June 9	"Dancing All Night" (ja)	Monta & Brothers (ja)
June 16
June 23
June 30
July 7
July 14
July 21
July 28
August 4
August 11
August 18	"Junko / Namida no Serenade" (ja)	Tsuyoshi Nagabuchi
August 25
September 1
September 8
September 15
September 22
September 29	"Hatto Shite! Good" (ja)	Toshihiko Tahara (ja)
October 6
October 13	"Kaze wa Aki Iro / Eighteen" (ja)	Seiko Matsuda
October 20
October 27
November 3
November 10
November 17	"Dancing Sister"	The Nolans
November 24
December 1	"Koibito yo" (ja)	Mayumi Itsuwa
December 8
December 15
December 22	"Sneaker Blues" (ja)	Masahiko Kondō
December 29

References

1. http://www18.ocn.ne.jp/~hbr/JP1_e.htm