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 dateSongArtist(s)Ref.January 2"UFO"Pink LadyJanuary 9January 16January 23January 30February 6February 13February 20February 27"" & March 6March 13"Hohoemi Gaeshi"CandiesMarch 20March 27April 3"Southpaw"Pink LadyApril 10April 17April 24May 1May 8May 15May 22May 29June 5""Kenji SawadaJune 12""Eikichi YazawaJune 19June 26July 3""July 10"Monster"Pink LadyJuly 17July 24July 31August 7August 14August 21August 28September 4""September 11""Takao HoriuchiSeptember 18September 25October 2"Tomei Ningen"Pink LadyOctober 9"Kimi no Hitomi wa 10,000 Volt"Takao HoriuchiOctober 16"Tomei Ningen"Pink LadyOctober 23October 30November 6""Chiharu MatsuyamaNovember 13November 20November 27December 4December 11December 18"Chameleon Army"Pink LadyDecember 25

See also 1978 in Japanese music

References Oricon No.1 Hits 500. Clubhouse (Japanese: クラブハウス). 1998. ISBN 9784906496129. vol 1 (1968~1985).