The highest-selling singles in Japan are ranked in the weekly Oricon Singles Chart, which is published by Oricon Style magazine. The data are compiled by Oricon based on each singles' weekly physical sales. This list includes the singles that reached the number one place on that chart in 2014.
| Issue date | Song | Artist(s) | Sales | Ref. |
|---|---|---|---|---|
| January 6 | "Ride With Me" | Hey! Say! JUMP | 190,000 | [1] |
| January 13 | "101-Kai-me no noroi" (１０１回目の呪い) | Golden Bomber | [2] | |
| January 20 | "Tomonoura Bojō" | Misaki Iwasa | 20,139 | [3] |
| January 27 | "Hibiki" | Kanjani Eight | 263,553 | [4] |
| February 3 | "Snow Magic Fantasy" | Sekai no Owari | 100,000 | [5] |
| February 10 | "Egao no Kimi wa Taiyō sa / Kimi no Kawari wa Iyashinai / What is Love?" | Morning Musume '14 | 149,361 | [6] |
| February 17 | "AinoArika/Aisureba Motto Happy Life" | Hey! Say! JUMP | 236,027 | [7] |
| February 24 | "Bittersweet" | Arashi | 591,847 | [8] |
| March 3 | "King of Otoko" | Kanjani Eight | 389,313 | [9] |
| March 10 | "Mae shika Mukanee" | AKB48 | 1,153,906 | [10] |
| March 17 | "Hikari no Signal" | Kis-My-Ft2 | 244,808 | [11] |
| March 24 | "Sakura, Minnade Tabeta" | HKT48 | 327,815 | [12] |
| March 31 | "Mirai to wa?" | SKE48 | 503,917 | [13] |
| April 7 | "Takane no Ringo" | NMB48 | 451,335 | [14] |
| April 14 | "Kizuitara Kataomoi" | Nogizaka46 | 546,832 | [15] |
| April 21 | "Yes We Are" / "Koko Kara" | SMAP | 168,000 | [16] |
| April 28 | "Toki o Koe Sora o Koe / Password is 0" | Morning Musume '14 | 119,409 | [17] |
| May 5 | "Eejanaika" | Johnny's WEST | 307,948 | [18] |
| May 12 | "Guts!" | Arashi | 604,654 | [19] |
| May 19 | "Naite mo Iin Da yo" | Momoiro Clover Z | 86,880 | [20] |
| May 26 | "Labrador Retriever" | AKB48 | 1,786,825 | [21] |
| June 2 | "Daremo Shiranai" | Arashi | 525,055 | [22] |
| June 9 | "In Fact" | KAT-TUN | 160,192 | [23] |
| June 16 | "One (For the Win)" | News | 199,007 | [24] |
| June 23 | "Hot Sun" | Kim Hyun-joong | [25] | |
| June 30 | "Ryusei" | Sandaime J Soul Brothers from Exile Tribe | 100,000 | [26] |
| July 7 | "Omoidama" | Kanjani Eight | 207,240 | [27] |
| July 14 | "Natsu no Free & Easy" | Nogizaka46 | 526,564 | [28] |
| July 21 | "Top of the World" / "Amazing Discovery" | SMAP | 167,000 | [29] |
| July 28 | "New Horizon" | Exile | 147,572 | [30] |
| August 4 | "Bukiyō Taiyō" | SKE48 | 461,539 | [31] |
| August 11 | "ER2" | Eightranger | 241,824 | [32] |
| August 18 | "Another Future" | Kis-My-Ft2 | 263,615 | [33] |
| August 25 | "The Revolution" | Exile Tribe | 573,268 | [34] |
| September 1 | "Kokoro no Placard" | AKB48 | 1,058,059 | [35] |
| September 8 | "Weekender" | Hey! Say! JUMP | 214,581 | [36] |
| September 15 | "Tokyo Victory" | Southern All Stars | [37] | |
| September 22 | "The Revolution" | Exile Tribe | (See Above) | [38] |
| September 29 | "Hikaeme I Love You!" | HKT48 | 308,251 | [39] |
| October 6 | "Never Give Up" | Sexy Zone | 347,737 | [40] |
| October 13 | "Nandome no Aozora ka?" | Nogizaka46 | 578,174 | [41] |
| October 20 | "Ittajanaika/CloveR" | Kanjani Eight | 308,369 | [42] |
| October 27 | "Sky's the Limit" | V6 | [43] | |
| November 10 | "Rashikunai" | NMB48 | 449,983 | [44] |
| November 17 | "Key with No Box" | KinKi Kids | 173,000 | [45] |
| November 24 | "Kimi ni Hitomebore" | Sexy Zone | 347,747 | [46] |
| December 1 | "Kibōteki Refrain" | AKB48 | 1,156,706 | [47] |
| December 8 | "Gamushara Kōshinkyoku" | Kanjani Eight | 201,022 | [48] |
| December 22 | "12 Gatsu no Kangarū" | SKE48 | 386,495 | [49] |
| December 29 | "Mamacita (Ayaya)" | Super Junior | 67,721 | [50] |