This is a list of the best-selling singles in 2018 in Japan, physical and digital sales are taken from Oricon yearly chart.
Ranking Single Artist Physical Digital TOTAL 1"Lemon"Kenshi Yonezu382,8961,796,9532,179,849 2"Teacher Teacher"AKB481,819,2371,819,237 3"Sentimental Train"AKB481,471,9581,471,958 4"Synchronicity"Nogizaka461,306,2471,306,247 5"Jikochu de Ikō!"Nogizaka461,281,6251,281,625 6"No Way Man"AKB481,213,5011,213,501 7"Jabaja"AKB481,172,3991,172,399 8"Kaerimichi wa Tōmawari Shitaku Naru"Nogizaka461,160,7841,160,784 9"Glass wo Ware!"Keyakizaka461,021,450133,3751,154,825 10"Ambivalent"Keyakizaka46970,268970,268 11"Cinderella Girl"King & Prince688,112688,112 12"U.S.A."Da Pump541,356541,356 13"Natsu Hayate"Arashi538,150538,150 14"Doraemon"Gen Hoshino192,701283,746476,447 15"Fake Love/Airplane pt.2"BTS471,083471,083 16Flamingo/Teenage RiotKenshi Yonezu259,490209,085468,575 17"Memorial"King & Prince451,851451,851 18"Find the Answer"Arashi439,525439,52519"Mabataki"Back Number434,455434,45520"Ikinari Punch Line"SKE48390,770390,77021"Muishiki no Iro"SKE48386,683386,68322"Loser"Kenshi Yonezu382,506382,50623"Idea"Gen Hoshino374,465374,46524"Wake Me Up"Twice354,088354,08825"Candy Pop"Twice340,992340,99226"Warotapy Po"NMB48338,133338,13327"White Love"Hey! Say! JUMP320,310320,31028"Ai no Katachi"Misia ft. Greeeen298,189298,18928"Boku Datte naichau yo" NMB48290,563290,56330"Uchiage Hanabi"Daoko with Kenshi Yonezu286,771286,771 Blank means no respective version or didn't chart.
See also List of Oricon number-one singles of 2018 List of number-one digital singles of 2018 (Japan)
References