List of Oricon number-one singles of 1978

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 1978.

Oricon Weekly Singles Chart

Issue date	Song	Artist(s)	Ref.
January 2	"UFO"	Pink Lady	[1]
January 9
January 16
January 23
January 30
February 6
February 13
February 20
February 27	"Canada Kara no Tegami [ja]"	Masaaki Hirao [ja] & Yōko Hatanaka [ja]
March 6
March 13	"Hohoemi Gaeshi"	Candies
March 20
March 27
April 3	"Southpaw"	Pink Lady
April 10
April 17
April 24
May 1
May 8
May 15
May 22
May 29
June 5	"Darling [ja]"	Kenji Sawada
June 12	"Jikan yo Tomare [ja]"	Eikichi Yazawa
June 19
June 26
July 3	"Mr. Summertime [ja]"	Circus [ja]
July 10	"Monster"	Pink Lady
July 17
July 24
July 31
August 7
August 14
August 21
August 28
September 4	"Hikigane [ja]"	Masanori Sera & Twist [ja]
September 11	"Kimi no Hitomi wa 10,000 Volt [ja]"	Takao Horiuchi
September 18
September 25
October 2	"Tomei Ningen"	Pink Lady
October 9	"Kimi no Hitomi wa 10,000 Volt"	Takao Horiuchi
October 16	"Tomei Ningen"	Pink Lady
October 23
October 30
November 6	"Kisetsu no Naka de [ja]"	Chiharu Matsuyama
November 13
November 20
November 27
December 4
December 11
December 18	"Chameleon Army"	Pink Lady
December 25

References

1. "Archived copy". Archived from the original on 2008-12-26. Retrieved 2008-10-13.