List of Oricon number-one singles of 1986
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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 1986.
Oricon Weekly Singles Chart
| class="wikitable plainrowheaders" style="text-align: center"
!width="80"|Issue date !width="100"|Song !width="100"|Artist(s) !width="20"|Ref. |
| scope="row"|January 6
|rowspan="1"|"{{ill|Koi ni Ochite: Fall in Love|ja|恋におちて -Fall in love-}}" |rowspan="1"|Akiko Kobayashi |
|---|
| scope="row"|January 13
|rowspan="3"|"{{ill|Fuyu no Opera-Glass|ja|冬のオペラグラス}}" |rowspan="3"|Eri Nitta |
| scope="row"|January 20 |
| scope="row"|January 27 |
| scope="row"|February 3
|rowspan="1"|"{{ill|Banana no Namida|ja|バナナの涙}}" |rowspan="1"|Ushiroyubi Sasaregumi |
| scope="row"|February 10
|rowspan="1"|"{{ill|Kuchibiru Network|ja|くちびるNetwork}}" |rowspan="1"|Yukiko Okada |
| scope="row"|February 17
|rowspan="1"|"Desire (Jōnetsu)" |rowspan="1"|Akina Nakamori |
| scope="row"|February 24
|rowspan="1"|{{ill|Broken Sunset|ja|Broken Sunset}} |rowspan="1"|Momoko Kikuchi |
| scope="row"|March 3
|rowspan="1"|"Jā ne" |rowspan="1"|Onyanko Club |
| scope="row"|March 10
|rowspan="2"|"{{ill|Kisetsu Hazure no Koi|ja|季節はずれの恋}}" |rowspan="2"|Akie Yoshizawa |
| scope="row"|March 17 |
| scope="row"|March 24
|rowspan="1"|"{{ill|My Revolution|ja|My Revolution}}" |rowspan="1"|Misato Watanabe |
| scope="row"|March 31
|rowspan="2"|"{{ill|Aoi Station|ja|青いスタスィオン}}" |rowspan="2"|Sonoko Kawai |
| scope="row"|April 7 |
| scope="row"|April 14
|rowspan="1"|"{{ill|Watashi wa Rika-chan|ja|私は里歌ちゃん}}" |rowspan="1"|Nyangilas |
| scope="row"|April 21
|rowspan="2"|"{{ill|Koi no Rope wo Hodokanai de|ja|恋のロープをほどかないで}}" |rowspan="2"|Eri Nitta |
| scope="row"|April 28 |
| scope="row"|May 5
|rowspan="1"|"Otto CHIKAN!" |rowspan="1"|Onyanko Club |
| scope="row"|May 12
|rowspan="1"|"{{ill|Zō-san no Scanty|ja|象さんのすきゃんてぃ}}" |rowspan="1"|Ushiroyubi Sasaregumi |
| scope="row"|May 19
|rowspan="1"|"{{ill|Natsu wo Matenai|ja|夏を待てない}}" |rowspan="1"|Sayuri Kokushō |
| scope="row"|May 26
|rowspan="1"|"{{ill|Natsu Iro Kataomoi|ja|夏色片想い}}" |rowspan="1"|Momoko Kikuchi |
| scope="row"|June 2
|rowspan="1"|"{{ill|Kaze no Invitation|ja|風のInvitation}}" |rowspan="1"|Satomi Fukunaga |
| scope="row"|June 9
|rowspan="1"|"Gypsy Queen" |rowspan="1"|Akina Nakamori |
| scope="row"|June 16
|rowspan="1"|"{{ill|Song for U.S.A|ja|Song for U.S.A.}}" |rowspan="1"|The Checkers |
| scope="row"|June 23
|rowspan="1"|"{{ill|Ajisai Bashi|ja|あじさい橋}}" |rowspan="1"|Sanae Jonouchi |
| scope="row"|June 30
|rowspan="1"|"{{ill|Jibun de Yūnomo Nan Desukeredo|ja|自分でゆーのもなんですけれど}}" |rowspan="1"|Nyangilas |
| scope="row"|July 7
|rowspan="1"|"{{ill|Cinderella-tachi e no Dengon|ja|シンデレラたちへの伝言}}" |rowspan="1"|Mamiko Takai |
| scope="row"|July 14
|rowspan="1"|"{{ill|Saikai no Labyrinth|ja|再会のラビリンス}}" |rowspan="1"|Sonoko Kawai |
| scope="row"|July 21
|rowspan="1"|"{{ill|Diamond Eyes (Shonentai song)|ja|ダイヤモンド・アイズ|lt=Diamond Eyes}}" |rowspan="1"|Shonentai |
| scope="row"|July 28
|rowspan="1"|"{{ill|Hitomi ni Yakusoku|ja|瞳に約束}}" |rowspan="1"|Minayo Watanabe |
| scope="row"|August 4
|rowspan="1"|"Osaki ni Shitsurei" |rowspan="1"|Onyanko Club |
| scope="row"|August 11
|rowspan="1"|"{{ill|Fushigi na Tejina no Yoni|ja|不思議な手品のように}}" |rowspan="1"|Eri Nitta |
| scope="row"|August 18
|rowspan="1"|"{{ill|Skipped Beat|ja|スキップ・ビート}}" |rowspan="1"|{{ill|Kuwata Band|ja|KUWATA BAND}} |
| scope="row"|August 25
|rowspan="1"|"{{ill|Noble Red no Toki|ja|ノーブルレッドの瞬間}}" |rowspan="1"|Sayuri Kokushō |
| scope="row"|September 1
|rowspan="1"|"Aozora no Kakera" |rowspan="1"|Yuki Saito |
| scope="row"|September 8
|rowspan="1"|"{{ill|Nagisa no Kagikakko|ja|渚の『・・・・・』}}" |rowspan="1"|Ushiroyubi Sasaregumi |
| scope="row"|September 15
|rowspan="1"|"{{ill|Say Yes!|ja|Say Yes!}}" |rowspan="1"|Momoko Kikuchi |
| scope="row"|September 22
|rowspan="1"|"{{ill|Kagami no Naka no Watashi|ja|鏡の中の私}}" |rowspan="1"|Akie Yoshizawa |
| scope="row"|September 29
|rowspan="1"|"{{ill|Melody (Mamiko Takai song)|ja|メロディ (高井麻巳子の曲)|lt=Melody}}" |rowspan="1"|Mamiko Takai |
| scope="row"|October 6
|rowspan="1"|"Fin" |rowspan="1"|Akina Nakamori |
| scope="row"|October 13
|rowspan="1"|"{{ill|Cha-Cha-Cha (Akemi Ishii song)|lt=Cha-Cha-Cha|ja|CHA-CHA-CHA}}" |rowspan="1"|{{ill|Akemi Ishii|ja|石井明美}} |
| scope="row"|October 20
|rowspan="1"|"{{ill|Shin Kōkyū Shite|ja|深呼吸して}}" |rowspan="1"|Marina Watanabe |
| scope="row"|October 27
|rowspan="1"|"{{ill|Yuki no Kaerimichi|ja|雪の帰り道}}" |rowspan="1"|Minayo Watanabe |
| scope="row"|November 3
|rowspan="1"|"{{ill|Kanashii Yoru wo Tomete|ja|悲しい夜を止めて}}" |rowspan="1"|Sonoko Kawai |
| scope="row"|November 10
|rowspan="1"|"Koi wa Question" |rowspan="1"|Onyanko Club |
| scope="row"|November 17
|rowspan="1"|"{{ill|One Day (Kuwata Band song)|lt=One Day|ja|ONE DAY (KUWATA BANDの曲)}}" |rowspan="1"|{{ill|Kuwata Band|es|Kuwata Band|ja|KUWATA BAND}} |
| scope="row"|November 24
|rowspan="1"|"{{ill|Naisho de Love Story|ja|内緒で浪漫映画}}" |rowspan="1"|Eri Nitta |
| scope="row"|December 1
|rowspan="1"|"{{ill|Waza-Ari!|ja|技ありっ!}}" |rowspan="1"|Ushiroyubi Sasaregumi |
| scope="row"|December 8
|rowspan="1"|"{{ill|Ballad no Yoni Nemure|ja|バラードのように眠れ}}" |rowspan="1"|Shonentai |
| scope="row"|December 15
|rowspan="1"|"{{ill|Ano Natsu no Bike|ja|あの夏のバイク}}" |rowspan="1"|Sayuri Kokushō |
| scope="row"|December 22
|rowspan="1"|"{{ill|Naimono Nedari no I Want You|ja|ないものねだりのI Want You}}" |rowspan="1"|C-C-B |
| scope="row"|December 29
|rowspan="1"|"{{ill|Yakusoku (Mamiko Takai song)|ja|約束_(高井麻巳子の曲)|lt=Yakusoku}}" |rowspan="1"|Mamiko Takai |