List of Oricon number-one singles of 2019
The following is a list of Oricon number-one singles of 2019.
Chart history
| Issue date | Song | Artist(s) | Ref. |
|---|---|---|---|
| January 7 | "The Idolmaster Million Theater Generation 12 (Harmonics)" | D/Zeal (Azusa Tadokoro and Aimi) | |
| January 14 | "Let's Go Bowling!!" | Keisuke Kuwata & The Pin Boys | |
| January 21 | "I Beg You/Hanabiratachi no Māchi/Sailing" | Aimer | |
| January 28 | "Super Powers/Right Now" | V6 | |
| February 4 | "Bokura no Hashittekita Michi wa.../Next Sparkling!!" | Aqours | |
| February 11 | "Homechigirisuto/Kizudarake no Ai" | Johnny's West | |
| February 18 | "Kimi wo Daisuki da" | Kis-My-Ft2 | |
| February 25 | "Kaze wo Matsu" | STU48 | |
| March 4 | "Tokonoma Seiza Musume" | NMB48 | |
| March 11 | "Kuroi Hitsuji" | Keyakizaka46 | |
| March 18 | "Crystal" | Kanjani Eight | |
| March 25 | "Jiwaru Days" | AKB48 | |
| April 1 | "Uchōten Shooter" | Matsuri Nine | |
| April 8 | "Kyun" | Hinatazaka46 | |
| April 15 | "Kimi o Matteru" | King & Prince | |
| April 22 | "Ishi" | HKT48 | |
| April 29 | "Otona Survivor" | Last Idol | |
| May 6 | "Ame Nochi Hare" | Johnny's West | |
| May 13 | "Kyun" | Hinatazaka46 | |
| May 20 | "Dark Knight" | One n' Only | |
| May 27 | "Rain" | Kazuya Kamenashi | |
| June 3 | "Lucky-Unlucky/Oh! My Darling" | Hey! Say! JUMP/Ryosuke Yamada | |
| June 10 | "Sing Out!" | Nogizaka46 | |
| June 17 | "Aru Hi Negai ga Kanattanda/All for You" | V6 | |
| June 24 | "Top Gun/Love Story" | NEWS | |
| July 1 | "Change" | Tomohisa Yamashita | |
| July 8 | "Buenos Aires" | Iz*One | |
| July 15 | "Lights/Boy with Luv" | BTS | |
| July 22 | "Hands Up" | Kis-My-Ft2 | |
| July 29 | "Do Re Mi Sol La Si Do" | Hinatazaka46 | |
| August 5 | "Frustration" | SKE48 | |
| August 12 | "Daisuki na Hito" | STU48 | |
| August 19 | "Megane no Otokonoko/Nippon no DNA!/Go Waist" | Beyooooonds | |
| August 26 | "Bokō e Kaere!" | NMB48 | |
| September 2 | "Fanfare!" | Hey! Say! JUMP | |
| September 9 | "Koi-Wazurai" | King & Prince | |
| September 16 | "Yoake Made Tsuyogaranakutemoii" | Nogizaka46 | |
| September 23 | "Brave" | Arashi | |
| September 30 | "Sustainable" | AKB48 | |
| October 7 | "Vampire" | Iz*One | |
| October 14 | "Konna ni Suki ni Natchatte Ii no?" | Hinatazaka46 | |
| October 21 | "Big Shot!!" | Johnny's West | |
| October 28 | "Category/My Love" | One n' Only | |
| November 4 | "Kirin no Ko/Honey Honey" | Sexy Zone | |
| November 11 | "Zurui yo Zurui ne" | =Love | |
| November 18 | "Hatsukoi Shijo Shugi" | NMB48 | |
| November 25 | "Edge of Days" | Kis-My-Ft2 | |
| December 2 | "Watashi wo Tsukuru no wa Watashi / Zenzen Okiagarenai Sunday" | Angerme | |
| December 9 | "Tomo yo" | Kanjani Eight | |
| December 16 | "Hikari no Kehai" | KinKi Kids | |
| December 23 | "Try Again" | Magic Prince | |
| December 30 | "Restart" | Mameshiba no Taigun |