List of Oricon number-one singles of 1991
This is the list of number-one singles in Japan during 1991 according to Oricon Chart[1]
| Issue Date | Song | Artist |
|---|
| 5 January | (No information) |
| 12 January | Aihakatsu (愛は勝つ) | KAN |
| 19 January |
| 26 January |
| 2 February |
| 9 February |
| 16 February | Oh Yeah! | Kazumasa Oda |
| 23 February |
| 2 March |
| 9 March |
| 16 March |
| 23 March |
| 30 March |
| 6 April |
| 13 April | LADY NAVEGATION | B'z |
| 20 April |
| 27 April | Wednesday Moon | Hideaki Tokunaga |
| 4 May | Eyes to me | Dreams come true |
| 11 May |
| 18 May | KISS | Princess Princess |
| 25 May | Please | Kudo Shizuka |
| 1 June | Love Train | TMN |
| 8 June | Anata ni aete yokatta (あなたに会えてよかった) | Kyoko Koizumi |
| 15 June |
| 22 June |
| 29 June |
| 6 July |
| 13 July | BEAT EMOTION | Tomoyasu Hotei |
| 20 July | Anata ni aete yokatta (あなたに会えてよかった) | Kyoko Koizumi |
| 27 July | Neo Bravo!! | Southern All Stars |
| 3 August | Say Yes | Chage and Aska |
| 10 August |
| 17 August |
| 24 August |
| 31 August |
| 7 September |
| 14 September |
| 21 September |
| 28 September |
| 5 October |
| 12 October |
| 19 October |
| 26 October |
| 1 November | Shabontama (しゃぼんたま) | Tsuyoshi Nagabuchi |
| 8 November | Alone | B'z |
| 15 November |
| 22 November | WILD HEAVEN | TMN |
| 29 November | Boku wa kono hitomi de usowotsuku (僕はこの瞳で嘘をつく) | Chage and Aska |
| 7 December |
| 14 December | PIECE OF MY WISH | Miki Imai |
| 21 December |
| 28 December |
References