The full lineup for COUNTDOWN JAPAN 26/27 has been announced, with a total of 179 artists scheduled to perform across four stages during the five-day music festival.

The event will take place at Makuhari Messe in Chiba Prefecture on December 26, 27, and 29–31, 2026.

The latest additions to the lineup include Koshi Inaba, Kento Nakajima, SUPER BEAVER, Kana Nishino, LE SSERAFIM, Sakurazaka46, Yorushika, Suchmos, Aimer, ano, ME, Ayumu Imazu, and MUCC, among others.

Other newly announced performers include plenty, MONAKI, Keina Suda, Meychan, ≒JOY, kurayamisaka, and TenTwenty.

Tickets are currently available through a second-round lottery presale on the official J Fes app, with applications open until November 2 at 4:00 p.m. JST.

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rockin'on presents COUNTDOWN JAPAN 26/27 Supported by au

Saturday, December 26 - Makuhari Messe (Chiba)
＜Performers＞
ASIAN KUNG-FU GENERATION / UNFAIR RULE / Masayoshi Oishi / KANA-BOON / CANDY TUNE  / Creepy Nuts / Sakurazaka46 / shukatsuclub / Juice=Juice / Da-iCE / Bullet Train (Chotokkyu) / akari Nanawo / NELKE / Novelbright / NOMELON NOLEMON / harha / Hitsuji Bungaku / Fumino / Brandy Senki / FRUITS ZIPPER / Frederic / plenty / FLOW / Hoshimachi Suisei / MAZZEL / MAISONdes / luv / Yorushika / luv / LE SSERAFIM / Leina / RETRORIRON / Reol / RoI3ert 

Sunday, December 27 - Makuhari Messe (Chiba)
＜Performers＞
Aooo / Lilas Ikuta / IS:SUE / Wienners / Age Factory / HY / Awich / CUTIE STREET / Cloudy / KOTORI / 35.7 / Sambomaster / ZICO / SU-XING-CYU / SUPER BEAVER / Kei Sugawara / sumika / CHiCO with HoneyWorks / Cho Tokimeki♡Sendenbu / Tokyo Ska Paradise Orchestra / Nakigoto / Kana Nishino / NEXZ / Bachikanshikokni_aisaretai / Haruka Mirai / FUNKY MONKEY BΛBY'S / Phantom Siita / berry meet / Penthouse / moon drop / Monaki / Yabai T-shirs Yasan / LANA 

Tuesday, December 29 - Makuhari Messe (Chiba)
＜Performers＞
Aina The End / Kiro Akiyama / amazarashi / Koshi Inaba / Eve / OddRe: / Kairiki Bear / 9mm Parabellum Bullet / KUZIRA / CLAN QUEEN / Suchmos / Chevon / SiM / syudou / Keina Suda /  SPARK!!SOUND!!SHOW!! / Surii  TAKU INOUE × Cho Kaguya Hime! / Dannie May / w.o.d. / tuki. / TK from Ling Tosite Sigure / Dizzy Sunfist / Hatsune Miku / Hanabie / PEOPLE 1 / Hitorie / MAXIMUM THE HORMONE / MAN WITH A MISSION / muque / MAYSON's PARTY / Meychan / Reisan 

Wednesday, December 30 - Makuhari Messe (Chiba)
＜Performers＞
iLiFE! / ano / Ayumu Imazu / indigo la End / AEN / ENHYPEN / Kaneyorimasaru  / CRAZY WOWOW!! / go!go!vanillas / Koresawa / SILENT SIREN / Saucy Dog / Sukima Switch / Airi Suzuki / This is LAST / DISH// / TRACK15 / Kento Nakajima / =JOY / Nishina Negishio Tondon / BURNOUT SYNDROMES / Macaroni Empitsu / Marcy / ME:I / Mega Shinnosuke / MON7A / Yuika / Little Glee Monster / Ryokuoushoku Shakai / LEX / Romanha Marshmallow

Thursday, December 31.- Makuhari Messe (Chiba)
＜Performers＞
IMP. / AKASAKI / Reira Ushio / Uchikubigokumon-Doukoukai / Aimer / Oishicle Melonpan / the Okuba's / Kyuso Nekokami / kurayamisaka / creephyp / kroi / Sunny Girl / Sabasister / SIX LOUNGE / SHANK / Queen Bee / jo0ji / Singer's High / 3markets[ ] / Second Backer / Psychic Warrior Duria / Chilli Beans. / TETORA / Tele / TenTwenty / 10-FEET / Natori / NEE / Neguse. / Backdrop Cinderella / Hump Back / Humbreaders / 04 Limited Sazabys / BLUE ENCOUNT / Blue Mash / HEY-SMITH / Paledusk / My Hair is Bad / MUCC / Yangskinny / Lavt / Lucky Kilimajaro / Regal Lily / reGretGirl / LiSA / WurtS / Wasureraneeyo