| Issue Date | Song | Artist | | 6 January | Christmas Eve (クリスマス・イブ) | Tatsuro Yamashita |
| 13 January |
| 20 January |
| 27 January | Kuchibiru Kara Biyaku | Shizuka Kudo |
| 3 February | Aku no hana (悪の華) | Buck Tick |
| 10 February | Kuchibiru Kara Biyaku | Shizuka Kudo |
| 17 February | Kōya no Megaroporisu (荒野のメガロポリス) | 光ＧＥＮＪＩ |
| 24 February | ＮＯ ＴＩＴＬＩＳＴ | Rie Miyazawa |
| 3 March | Kiss me Now (今すぐＫｉｓｓ Ｍｅ) | LINDBERG |
| 10 March | Miss Me! (見逃してくれよ！) | Kyoko Koizumi |
| 17 March | Kiss me Now (今すぐＫｉｓｓ Ｍｅ) | LINDBERG |
| 24 March | 1990 | COMPLEX |
| 31 March | Kiss me Now (今すぐＫｉｓｓ Ｍｅ) | LINDBERG |
| 7 April |
| 14 April | Sexy Music | WINK |
| 21 April |
| 28 April | Roman hikō (浪漫飛行) | Kome Club |
| 5 May | OH YEAH! | Princess Princess |
| 12 May | Sayonara Jinrui (さよなら人類) | Tama |
| 19 May | Senryū no Shizuku | Shizuka Kudo |
| 26 May | JEALOUSY O nemura sete (ＪＥＡＬＯＵＳＹを眠らせて) | Kyosuke Himuro |
| 2 June | PURE GOLD | Eikichi Yazawa |
| 9 June | JEALOUSY O nemura sete (ＪＥＡＬＯＵＳＹを眠らせて) | Kyosuke Himuro |
| 16 June | Sayonara Jinrui (さよなら人類) | Tama |
| 23 June | Taiyō no Komachi Angel (太陽のＫｏｍａｃｈｉ Ａｎｇｅｌ) | B'z |
| 30 June | Nichiyōbi (にちようび) | Jitterin'Jinn |
| 7 July |
| 14 July | Odoru Pompokolin (おどるポンポコリン) | B.B. Queens |
| 21 July | THE POINT OF LOVER'S NIGHT | TM NETWORK |
| 28 July | Odoru Pompokolin (おどるポンポコリン) | B.B. Queens |
| 4 August | Jōnetsu no bara (情熱の薔薇) | The Blue Hearts |
| 11 August | Dear Friend | Akina Nakamori |
| 18 August | Odoru Pompokolin (おどるポンポコリン) | B.B. Queens |
| 25 August | COCORO | 光ＧＥＮＪＩ |
| 1 September | Odoru Pompokolin (おどるポンポコリン) | B.B. Queens |
| 8 September |
| 15 September |
| 22 September |
| 29 September | Watashi ni Tsuite | Shizuka Kudo |
| 6 October |
| 13 October | TIME TO COUNTDOWN | TM NETWORK |
| 20 October | Easy come, easy go! | B'z |
| 27 October |
| 3 November | Itoshī hi toyo GOOD NIGHT... (愛しい人よＧｏｏｄ Ｎｉｇｈｔ…) | B'z |
| 10 November | Emitteyo (笑ってよ) | 光ＧＥＮＪＩ |
| 17 November | Mizu ni sashita hana (水に挿した花) | Akina Nakamori |
| 24 November | Silent Eve (サイレント・イヴ) | Midori Karashima |
| 1 December | Jurian (ジュリアン) | Princess Princess |
| 8 December | Silent Eve (サイレント・イヴ) | Midori Karashima |
| 15 December |
| 22 December | Aihakatsu (愛は勝つ) | KAN |
| 29 December |
1. ^
{{Number-one singles in Japan}}