Hello! Project COUNTDOWN PARTY 2019 ~GOOD BYE & HELLO!~

{{Concertinfobox '''Hello! Project COUNTDOWN PARTY 2019 ~GOOD BYE & HELLO!~''' was Hello! Project's special annual countdown live concert to celebrate the new year. It took place on December 31, 2019 at Nakano Sun Plaza.
 * color1 = h!p
 * Cover =
 * name = Hello! Project COUNTDOWN PARTY 2019 ~GOOD BYE & HELLO!~
 * Cover2 =
 * artist = Hello! Project
 * oneday = December 31, 2019
 * label = [{{LinkBug|zetima}}
 * Last = Hello! Project 2019 SUMMER
 * Next = Hello! Project 2020 Winter

The countdown concert was split into two parts. The first part of the concert starting at 16:00 featured all Hello! Project members, while the second part starting at 23:00 only featured members over the age of 18. The second part was broadcasted live on BS SKY PerfecTV! and SKY Channel 2 4K.

Setlist
|-|Part 1= TBA TBA
 * -|Part 2=

Featured Members
Those with a ＊ will not participate in the 23:00 show.
 * MCs
 * Kumai Yurina
 * Nakajima Saki
 * Morning Musume '19
 * 9th Gen: Fukumura Mizuki, Ikuta Erina
 * 10th Gen: Ishida Ayumi, Sato Masaki
 * 11th Gen: Oda Sakura
 * 12th Gen: Nonaka Miki, Makino Maria, Haga Akane＊
 * 13th Gen: Kaga Kaede, Yokoyama Reina
 * 14th Gen: Morito Chisaki
 * 15th Gen: Kitagawa Rio＊, Okamura Homare＊, Yamazaki Mei＊
 * ANGERME
 * 2nd Gen: Takeuchi Akari
 * 3rd Gen: Murota Mizuki, Sasaki Rikako＊
 * 4th Gen: Kamikokuryo Moe
 * 5th Gen: Kasahara Momona＊
 * 6th Gen: Funaki Musubu＊, Kawamura Ayano
 * 7th Gen: Oota Haruka＊, Ise Layla＊
 * 8th Gen: Hashisako Rin＊
 * Juice=Juice
 * Miyazaki Yuka
 * Kanazawa Tomoko
 * Takagi Sayuki
 * Miyamoto Karin
 * Uemura Akari
 * Yanagawa Nanami
 * Dambara Ruru
 * Inaba Manaka
 * Kudo Yume＊
 * Matsunaga Riai＊
 * Kobushi Factory
 * Hirose Ayaka
 * Nomura Minami
 * Hamaura Ayano
 * Wada Sakurako＊
 * Inoue Rei＊
 * Tsubaki Factory
 * Yamagishi Riko
 * Ogata Risa
 * Niinuma Kisora
 * Tanimoto Ami
 * Kishimoto Yumeno
 * Asakura Kiki
 * Ono Mizuho
 * Onoda Saori＊
 * Akiyama Mao＊
 * BEYOOOOONDS
 * CHICA#TETSU
 * Ichioka Reina
 * Shimakura Rika
 * Nishida Shiori＊
 * Eguchi Saya＊
 * Ame no Mori Kawa Umi
 * Takase Kurumi
 * Maeda Kokoro＊
 * Yamazaki Yuhane＊
 * Okamura Minami＊
 * Kiyono Momohime＊
 * Hello Pro Kenshuusei＊
 * Okamura Minami＊
 * Kiyono Momohime＊
 * Hello Pro Kenshuusei＊


 * 25th Gen: Ono Kotomi
 * 27th Gen: Yamada Ichigo
 * 28th Gen: Tamenaga Shion, Shutto Anna, Kanemitsu Ruru, Kubota Nanami


 * Part 2 Guests
 * Sudo Maasa
 * Kumai Yurina
 * Yajima Maimi
 * Nakajima Saki


 * Opening Act

Concert Schedule

 * Total: 2 Shows